Oscar frontrunners Joaquin Phoenix and Renée Zellweger glammed up to receive awards at the 31st Annual Palm Springs International Film Festival Gala in California on Thursday.

Rather than bring his live-in love is Rooney Mara, the Puerto Rican-born 45-year-old arrived to the Palm Springs Convention Center with his beloved mother, Heart Bottom.

The silver-haired matriarch - who celebrated her 75th birthday on Tuesday - beamed with pride as she posed beside her most accomplished child while wearing a black-lace cocktail dress.

Oscar frontrunners: Joaquin Phoenix (2-L) and Renée Zellweger (R) glammed up to receive awards at the 31st Palm Springs International Film Festival Gala in California on Thursday

Having Mama Heart by his side certainly put a rare smile on Joaquin - whose hair was coiffed by groomer David Cox - as he posed in a Tarantino-style black suit with Converse low-top sneakers.

Phoenix was then presented with the Chairman's Award for his performance in Joker by his director Todd Phillips, whom he joined onstage.

The 49-year-old filmmaker has been teasing a possible Joker sequel with the ex-Children of God cult member after the supervillain origin tale amassed $1.063B at the box office.

The Warner Bros. psychological drama starring Phoenix as tortured clown and comedian Arthur Fleck made history as the highest-grossing R-rated film of all time despite a 69% Rotten Tomatoes rating.

Family: Rather than bring his live-in love is Rooney Mara, the Puerto Rican-born 45-year-old arrived to the Palm Springs Convention Center with his beloved mother, Heart Bottom

Celebrated her 75th birthday on Tuesday! The silver-haired matriarch beamed with pride as she posed beside her most accomplished child while wearing a black-lace cocktail dress

Happy: Having Mama Heart by his side certainly put a rare smile on Joaquin as he posed in a Tarantino-style black suit with Converse low-top sneakers

The three-time Oscar nominee is next nominated for the best actor in a motion picture drama trophy at the 77th Golden Globe Awards, which air this Sunday on NBC.

Joaquin faces heavy competition against Marriage Story's Adam Driver, Ford v Ferrari's Christian Bale, The Two Popes' Jonathan Pryce, and Pain and Glory's Antonio Banderas.

Meanwhile, Renée attended the desert fest, which runs through January 13, without her boyfriend of eight years, blues musician Doyle Bramhall II.

Maestro: Phoenix was then presented with the Chairman's Award for his performance in Joker by his director Todd Phillips (L), whom he joined onstage

Amassed $1.063B at the box office! The 49-year-old filmmaker has been teasing a possible Joker sequel with the ex-Children of God cult member after the supervillain origin tale

Triumph: The Warner Bros. psychological drama starring Phoenix as tortured clown and comedian Arthur Fleck made history as the highest-grossing R-rated film of all time despite a 69% Rotten Tomatoes rating

Who will win? The three-time Oscar nominee is next nominated for the best actor in a motion picture drama trophy at the 77th Golden Globe Awards, which air this Sunday on NBC

The Oscar winner easily defied her 50 years in a black chiffon-peplum jumpsuit from Jason Wu's SS20 RTW collection and matching pumps selected by stylist Petra Flannery.

Hairstylist Richard Marin coiffed the blonde Texan's piecy ponytail for the red carpet ceremony.

Make-up artist Kindra Mann had a light touch with Zellweger, bringing out her rosy cheeks, lashes, and defined brows.

Solo mission: Renée attended the desert fest, which runs through January 13, without her boyfriend of eight years, blues musician Doyle Bramhall II

Werrrk! The Oscar winner easily defied her 50 years in a black chiffon-peplum jumpsuit from Jason Wu's SS20 RTW collection and matching pumps selected by stylist Petra Flannery

Ruffles: Hairstylist Richard Marin coiffed the blonde Texan's piecy ponytail for the red carpet ceremony

Ready for her close-up! Make-up artist Kindra Mann had a light touch with Zellweger, bringing out her rosy cheeks, lashes, and defined brows

The Bridget Jones alum was presented with the Desert Palm Achievement Award for her performance in Judy by her director Rupert Goold.

Renée used a dialect coach, wigs, contact lenses, false teeth, and a prosthetic nose to transform into the legendary Judy Garland in the critically-acclaimed flick, which earned $37.9M at the box office.

Zellweger hadn't sung or danced since her Oscar-nominated turn as vaudevillian Roxie Hart in Rob Marshall's 2002 big-screen adaptation of the Broadway musical Chicago.

At the helm: The Bridget Jones alum was presented with the Desert Palm Achievement Award for her performance in Judy by her director Rupert Goold (L)

Earned $37.9M at the box office: Renée used a dialect coach, wigs, contact lenses, false teeth, and a prosthetic nose to transform into the legendary Judy Garland in the critically-acclaimed flick

Airing this Sunday on NBC! Zellweger will next face off against Cynthia Erivo, Scarlett Johansson, Saoirse Ronan, and Charlize Theron at the Golden Globes

The What/If actress will face off against Cynthia Erivo, Scarlett Johansson, Saoirse Ronan, and Charlize Theron for the best actress in a drama trophy at the Golden Globes airing this Sunday on NBC.

The three-time Golden Globe winner had no luck trying to contact Judy's three surviving children - one of which - Liza Minnelli outright condemned the movie.

'I have never met nor spoken to Renée Zellweger,' the 73-year-old Oscar winner posted on Facebook in 2018.

'I have never met nor spoken to Renée Zellweger': The What/If actress had no luck trying to contact Judy's three surviving children - one of which - Liza Minnelli (R) condemned the movie (pictured in 1967)

The 73-year-old Oscar winner posted on Facebook in 2018: 'I don't know how these stories get started, but I do not approve nor sanction the upcoming film about Judy Garland in any way. Any reports to the contrary are 100% Fiction'

Uh-oh! Little did Liza know that Irish actress Gemma-Leah Devereux (R) would portray her in the months before her famous mother's 1969 death, age 47, from an accidental overdose

'I don't know how these stories get started, but I do not approve nor sanction the upcoming film about Judy Garland in any way. Any reports to the contrary are 100% Fiction.'

Little did Liza know that Irish actress Gemma-Leah Devereux would portray her in the months before her famous mother's 1969 death, age 47, from an accidental overdose.

Renée told Screen Daily last week: 'I'm sure it's probably an emotionally complicated thing to experience people talking about your mum in a project that you were not fostering personally.'