It was a big night for the cast of hit series Succession after they scooped Best Television Series - Drama.

So it was hardly surprising that the group seemed to be in very high spirits as they attended the HBO Golden Globes afterparty at Circa 55 Restaurant in Hollywood on Sunday.

The night also saw a win for leading man Brian Cox, who took home the award for Best Performance By An Actor In A Television Series.

Victorious: Succession's Brian Cox, Kieran Culkin, Jesse Armstrong, Alan Ruck and Sarah Snook put on a VERY raucous display at the HBO after-party following the Golden Globes

Proudly brandishing his award, the 73-year-old actor looked in high spirits as he joined Kieran Culkin, Jesse Armstrong, Alan Ruck and Sarah Snook in posing for pictures.

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The men all looked dapper for the occasion in fitted black suits, whilst Sarah was dressed to impress in a glittering Christian Siriano ballgown that flared over her lithe figure.

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The Australian actress, 32, added to the glamour by styling her strawberry blonde locks in a slick blunt bob and donning subtle pink lipstick.

Fantastic effort: It was a big night for the cast of the hit series after they scooped Best Television Series - Drama, so it's no wonder they let their hair down at Circa 55 Restaurant

Success: The night also saw a win for leading man Brian Cox (left) who took home the award for Best Performance By An Actor In A Television Series

Gorgeous! The men all looked dapper for the occasion in fitted black suits, whilst Sarah was dressed to impress in a glittering Christian Siriano ballgown that flared over her lithe figure

Stunning: The Australian actress, 32, added to the glamour by styling her strawberry blonde locks in a slick blunt bob and donning subtle pink lipstick

Two's company: Sarah cosied up to co-star Nicholas Braun at the event

Loving life: It was hardly surprising that the group seemed to be loving life on the night

Earlier in the night, Brian expressed how surprised he was at winning Best Performance By An Actor after 60 years in the entertainment business.

The veteran star couldn't contain his excitement after his name was called, and planted a big kiss on the lips of co-star Kieran Culkin, who was sitting near an aisle seat.

After showing a complete look of shook and excitement on his face, the Scottish-born actor momentarily celebrated at his table before making the walk to the stage.

Winner: Earlier in the night, Brian (2L) expressed how surprised he was at winning Best Performance By An Actor after 60 years in the entertainment business

Pucker up: The veteran star couldn't contain his excitement after his name was called, and planted a big kiss on the lips of co-star Kieran Culkin, who was sitting near an aisle seat

Stiff competition: Season two of the HBO series beat out competition from Big Little Lies, The Crown, Killing Eve, and The Morning Show to take home the trophy

Looking good: It was no wonder the cast looked in high spirits after their night of success

Look out for it! Cox previously confirmed the third season of Succession is being written at present, and is expected to be back on screens in October 2020

Cliffhanger: The second series ended on a cliffhanger, with Logan's troubled son Kendall (Jeremy Strong) announcing to the world's media that his father was aware of long-term corruption and sex scandals within the company's cruise sector

Man of the hour: Brian seemed to need a sit down after all the excitement as he posed alongside Jeremy Strong with a glass of champagne in hand

It was Culkin who reached out to Cox with his right hand from his seat to show his appreciation.

But instead of shaking hands with the young Golden Globe nominated actor, Cox came in and put both of his hands along Culkin's face and delivered a gentle smooch.

Once onstage, Cox dedicated the award to showrunner Jesse Armstrong, and he acknowledged the other nominees.

Radiant: Also at the HBO party was Helen Mirren, who donned more than $4million worth of diamonds with her glamorous crimson gown

Breathtaking: The actress, 74, swooshed the skirt of her crimson skirt, displaying the tulle layering underneath, as she posed up a storm at the after-party

Glamorous: All eyes were on Helen at the event

'First of all, I want to apologize to my fellow nominees for winning this. I mean, I'm sorry. And that's all I can say: I’m sorry,' the actor, who portrays Logan Roy on the HBO series, said.

'But I never expected this. And I’ve been in this business, well, next year I would have been in this business 60 years. I mean, I started when I was two, and I just never thought this would happen to me, so I'm a wee bit shocked.'

He also took the time to thank the cast and crew, adding that it wouldn't have happened if he 'hadn't worked with the most extraordinary bunch of people ever.'

Cute couple: Helen was seen cosying up to her husband Taylor Hackford at the event

Cute couple: The pair put on an affectionate display as they snuggled up to one another at the star-studded event

Posing up a storm! The pair worked their angles for the camera on the night

Swish, swish! Helen was in her element as she spun her skirt around on the red carpet

Glam: She looked sensational

Radiant: Helen was a vision of beauty as she posed for the cameras at the event

In another win for the series, Succession was also named Best Television Series - Drama at the ceremony.

Armstrong, who was also the creator and executive producer, took to the stage at the Beverly Hilton Hotel alongside a number of members of the cast and crew of the show, that included actors Cox, Culkin, Nicholas Braun and Sarah Snook.

'Thank you very much, to the Hollywood Foreign Press Association, to HBO for their tremendous support,' Armstrong said.

Three's company: Helen then posed alongside Jason Momoa and his wife Lisa Bonet

Looking good: The trio looked phenomenal as they posed alongside one another

Affectionate: Helen welcomed Jason with an affectionate hug as they partied together

Your turn! Dame Helen then turned her attention to Lisa as they shared a snuggle

Catching up: The trio all seemed to be in great spirits as they chatted away to one another

He also took time to praise everyone involved, both in front and behind the camera.

'For everyone else working on the show, it's a TV show and I'm here as a representative to represent all of us, so if you've ever appeared on the call sheet or titles of Succession, congratulations, we've won a Golden Globe.'

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Season two of the HBO series beat out competition from Big Little Lies, The Crown, Killing Eve, and The Morning Show to take home the trophy.

Cute couple: Ansel Elgort was joined by his stunning girlfriend Violetta Komyshan at the bash

Delightful duo: The couple were sartorially in sync as they donned navy for the event

Culkin was also nominated for Best Performance by an Actor in a Supporting Role in a Series, Limited Series or Motion Picture Made for Television, but the award went to Stellan Skarsgard for his role in the HBO miniseries Chernobyl.

Cox previously confirmed the third season of Succession is being written at present, and is expected to be back on screens in October 2020.

The second series ended on a cliffhanger, with Logan's troubled son Kendall (Jeremy Strong) announcing to the world's media that his father was aware of long-term corruption and sex scandals within the company's cruise sector.

Fantastic four: The cast of Europhia looked europhic at the after-party, with Sydney Sweeney, Barbie Ferreira, Hunter Schafer and Maude Apatow posing with one another

A vision in white! Sydney Sweeney looked phenomenal in a plunging cream gown that flashed plenty of cleavage and side boob, as well as showing off her lean legs

Glam: She looked incredible

Elsewhere in the ceremony two veteran stars changed their fortunes in yet another great Hollywood comeback story.

It has been 16 years since Renee Zellweger came home with a Golden Globe and it has been even longer for Brad Pitt who last won in 1996.

The 56-year-old actor earned Best Actor in a Supporting Role in Any Motion Picture at the star-studded event held at the Beverly Hills Hilton on Sunday night before his film Once Upon A Time In Hollywood earned top honor Best Motion Picture – Musical or Comedy.

Zellweger, 50, then won for her role in Judy Garland biopic Judy in one of the most contentious categories of the night: Best Actress in a Motion Picture – Drama.

She last won Best Performance by an Actress in a Supporting Role in a Motion Picture for Cold Mountain in 2004 while it has been 24-years since Pitt won Best Performance by an Actor in a Supporting Role in a Motion Picture for his work in Twelve Monkeys.

Three of a kind: Sarah Snook, Hunter Schafer and Maude Apatow looked stunning on the night

Delightful: Maude Apatow looked sensational as she posed up a storm in a glamorous gown at the party

Chic: Barbie Ferreira was a vision of beauty at the bash

Glittering: Rowan Blanchard ensured all eyes would be on her in her dazzling ensemble

Zellweger faced stiff-competition including: Cynthia Erivo (Harriet), Scarlett Johansson (Marriage Story), Saoirse Ronan (Little Women), and Charlize Theron (Bombshell).

In her speech she showed respect to her fellow nominees as she said: 'Well hi, everybody. It’s nice to see you. You all look pretty good, 17 years later. Thank you to the HFPA for inviting me back to the family reunion, especially with all these extraordinary ladies this year.

'Your work moves me, and I’ve been cheering for y’all from theater seats for a long time.'

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Judy follows legendary performer Judy Garland after she arrives in London in the winter of 1968 to perform a series of sold out concert.

Pretty in prints! Storm Reid looked lovely in a floor length gown in a bold green watercolour print with bow detailing at the back

Lovely: Storm looked wonderful

Strike a pose! Storm looked comfortable in front of the camera

Loving life: Angus Cloud, Maude Apatow, guest, and Hunter Schafer looked in high spirits

During his speech, Brad had the attention of the crowd as he also paid tribute to his co-star Leonardo DiCaprio while making a Titanic joke as he said: 'I also have to thank my partner in crime, LDC.... he’s an all star, he’s a gent. I wouldn’t be here without you, man. I thank you. Still, I would have shared the raft.'

He concluded the fun acceptance speech with a sweet humanitarian message by saying: 'Hey, if you see an opportunity to be kind to someone tomorrow, take it. I think we all need it.'

Pitt beat out A-list talent including: Tom Hanks (A Beautiful Day In The Neighborhood), Anthony Hopkins (The Two Popes), Al Pacino (The Irishman), and Joe Pesci (The Irishman).

His big award was one of three earned by Once Upon A Time In Hollywood including Best Motion Picture – Musical or Comedy.

Radiant: Patrick Stewart and Sunny Ozell made for a handsome couple at the event

Cosy couple: The pair looked smitten as they snuggled up to one another for snaps

Lovely in lace! Kathryn Newton was a vision in a floor length white gown that boasted a sheer overlay and delicate lace detail

Stunning: Kathryn was a vision of beauty

Producer David Heyman accepted the prize as he revealed that director and writer Quentin Tarantino told him he would be representing the cast and crew on the grand stage as he said: 'Quentin is nothing if unpredictable. A few seconds ago he told me I was going to speak.'

Tarantino also won for Best Screenplay earlier in the night.

Once Upon A Time In Hollywood tells the story of TV star Rick Dalton (DiCaprio) and his longtime stunt double Cliff Booth (Pitt), who make their way around an industry they hardly recognize anymore.

Quirky: Cynthia Erivo shunned a traditional ballgown in favour of a black skirt suit with bold white piping detailing on the bodice

Glam: She looked sensational

Loving life: Cynthia seemed to be in high spirits as she beamed broadly for the cameras

Pretty in purple! Terri Seymour was a vision in a floor length plum gown that clung to her sensational figure and featured cut out detailing on the chest

Joaquin Phoenix earned Best Actor in a Motion Picture – Drama for his role in highest box office earning R-rated film of all-time: Joker.

The 45-year-old actor showed that he still has a penchant for mischief as he kept the censors busy with his profanity-laden acceptance speech which began: 'Contrary to popular belief, I don't want to rock the boat. But the boat is f***ing rocked!'

He went on to address the fires in Australia and ongoing climate crisis as he urged Hollywood to do better like 'not taking privates to Palm Springs.'

Phoenix then got choked up while mentioning fiancée Rooney Mara and those in attendance as he ended his speech: 'Rooney, I love you. I'm so grateful for this night and all of you. Thank you.'

Two's company: Game Of Thrones star Kit Harington posed alongside Dylan Schombing

Dapper dude: Dylan looked sweet in a black suit and grey shirt combination

Of course Joker follows mentally troubled comedian Arthur Fleck who is mistreated by society leading him into a downward spiral with the eventual path of becoming his super-villain alter-ego.

Sam Mendes' war epic 1917 was the top winner in the dramatic film categories as it earned the last award of the night: Best Motion Picture – Drama.

The film that follows two young British soldiers during the First World War who were given an impossible mission beat out critically-acclaimed films: The Irishman, Marriage Story, Joker, and The Two Popes.

Glittering in green: Ibtihaj Muhammad dazzled in a glitzy emerald co-ord at the bash

Two's company: Jared Harris and Allegra Riggio snuggled up at the glitzy bash

Pucker up: Allegra planted a kiss on Jared's cheek as they posed for snaps together

British filmmaker Mendes, 53, also won Best Director – Motion Picture earlier in the night.

Phoebe Waller-Bridge was also one of the biggest winners of the night on the television end as she took home two top awards for Fleabag.

As former US President Barack Obama recently put the BBC/Amazon show on his list of favorite movies and music of 2019, the 34-year-old British star made a hilarious joke for fans while accepting one of the top honors of the night; Best Television Series – Musical or Comedy.

Suited and booted! Jimmy O. Yang made a suave entrance to the bash

Dapper: Jayce Baron Sadler looked great

Looking good: James Wolk looked great in a navy tuxedo for the event

Taking the plunge: Kennedy McMann put on a busty display in a gold gown with keyhole cut out that showcased her cleavage

During her speech, she referenced a racy scene from the first season of the groundbreaking series in which her character masturbated to Obama delivering a keynote speech to Parliament in 2011.

She said: 'Personally, I'd like to thank Obama for putting us on his list and as some of you may know, he's always been on mine. And if you don't get that joke, watch season one of Fleabag really, really quickly! Thank you so much.'

It was yet another milestone night for the star as Waller-Bridge also earned Best Performance by an Actress in a Television Series – Musical or Comedy for the comedy series.

The greatest accessory: Stellan Skarsgard, Jared Harris and Johan Renck put the Golden Globe front and centre as they posed at the event

Fantastic four: Stellan Skarsgard, Casey Bloys, Jared Harris, and Jesse Armstrong looked like they were having the time of their lives at the event

One to watch: The Chernobyl cast celebrated their win at the afterparty

Friends reunited: Stellan Skarsgard looked pleased to see Jared Harris

During that speech, the star paid tribute to co-star Andrew Scott when she first hit the podium to accept her award.

After celebrating with a kiss on the cheek during the announcement, the writer, director and actress dedicated the win to Scott as she joked that the 43-year-old Irish actor; 'could have chemistry with a pebble.'

She said: 'Oh my God. Thank you so much to the Hollywood Foreign Press Association for this, it’s really heavy and cool.

Chirpy: Jon Voight seemed to be in good spirits as he made a late entrance to the party

Two's company: Alan Ruck and Nicholas Braun looked dapper as they posed together

Hi there: Nicholas was then seen putting on an animated display with Kieran Culkin

'This really comes down to Andrew Scott really because that man, there was a lot of talk about the chemistry between us in the show but he could have chemistry with a pebble and Id loved being Andrew’s pebble in this, thanks for bringing so much fire to this season.'

She faced heavy-competition including: Christina Applegate (Dead to Me), Rachel Brosnahan (The Marvelous Mrs. Maisel), Kirsten Dunst (On Becoming a God in Central Florida), and Natasha Lyonne (Russian Doll).

Waller-Bridge portrays the titular character in the groundbreaking series - which she adapted from an award-winning play - as it follows a young woman trying to cope with life in London while coming to terms with a recent tragedy.

He's the man! JB Smoove looked delighted to be sitting with legendary actor Larry David

Ready to party: Harry Williams, Sarah Hammond, and Joe Lewis looked ready to hit the dance floor as they attended the bash

Delightful duo: Jimmy Jean-Louis and his wife Evelyn snuggled up to take pictures

It was a big night for the Fleabag family as Olivia Colman earned Best Performance by an Actress in a Television Series – Drama for The Crown.

The 45-year-old British actress - who portrays Queen Elizabeth II in the Netflix series - beat out heavy competition including Killing Eve's Jodie Comer, Big Little Lies star Nicole Kidman, and Jennifer Aniston and Reese Witherspoon who both star in The Morning Show.

She said: 'For the last year I feel like I've been living someone else's life and now I feel like I'm winning someone else's award.'

All-smiles: Harry and Joe brandished their gongs at the glitzy after party

Proud: Chernobyl producer Craig Mazin looked pleased as punch with his award

Earlier in the night, Russell Crowe was absent as he was announced as the winner of the Best Performance by an Actor in a Limited Series or Motion Picture Made for Television award.

Then 55-year-old actor was given the honor for his work portraying controversial Fox News executive Roger Ailes in Showtime limited series The Loudest Voice.

However he opted not to attend the gala as he stayed in Australia, where he has lived most of his life, to aid with the wildfires that have ravaged the country.

He did, however, send a very pointed statement about climate change which presenter Jennifer Aniston read.

Blue-tiful! Erika Christensen looked sensational in a navy velvet jumpsuit

It said: 'Make no mistake. The tragedy unfolding in Australia is climate change-based. We need to act based on science, move our global workforce to renewable energy and respect our planet for the unique & amazing place it is.'

Australia's wildfires have burned about 12.35 million acres of land and destroyed over 1,400 homes. The death toll has reached 24 people.

Crowe was up against against Sam Rockwell (Fosse/Verdon), Christopher Abbott (Catch-22), Jared Harris (Chernobyl) and Sacha Baron Cohen (The Spy).

In seven-part limited series, The Loudest Voice, Crowe portrayed the now-late Ailes who founded Fox News and focuses on the decade in which he arguably became the Republican Party's de facto leader and sexual harassment accusations which eventually brought his career to and end.

Ramy Yusef was the first to earn a win at the event as he was presented Best Performance by an Actor in a Television Series – Musical or Comedy for his work in Hulu series Ramy.

The first-time nominee joked he was not only unrecognizable to anyone in the audience, but his mother had wanted him to lose to The Kominsky Method's Michael Douglas, who was also on the shortlist alongside Barry's Bill Hader, Paul Rudd (Living With Yourself), and Ben Platt (The Politician).

Director and writer Bong Joon Ho accepted Best Motion Picture, Foreign Language for Parasite.

Tom Hanks and Ellen DeGeneres also received special honors for their work in their respective fields.

Hanks, 63, earned the Cecil B. DeMille Award which is an accolade for the film industry.

He has won four Golden Globes including for his acting in Big, Philadelphia, and Forrest Gump along with his directing for HBO miniseries Band Of Brothers.

DeGeneres, 61, earned the Carol Burnett Award which is the television equivalent of the DeMille Award but focuses on television.

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The talk show host has won multiple Emmys and nominated for three Golden Globes. She has hosted her talk show - The Ellen DeGeneres Show - since 2003.