TRAGIC actress Lisa Robin Kelly, who starred in the hit That '70s Show, has died while in rehab.

TMZ reports that the actress, 43, passed away in her sleep at a California clinic from cardiac arrest.

While tragic Kelly's life spiralled out of control in recent years, many of her co-stars were making big names for themselves in Hollywood.See what became of them by scrolling down our story

The actress checked herself into rehab last week for treatment for an alcohol problem she had been fighting for years.

She played Laurie Forman, Eric Forman's (Topher Grace) sister, on That '70s Show.

"Unfortunately Lisa Robin Kelly passed away last evening. Lisa had voluntarily checked herself into a treatment facility early this week where she was battling the addiction problems that have plagued her these past few years," her manager Craig Wycoff said.

media_camera The actress pictured at a Hollywood party in 2000. Photo credit: Kevin Winter/ImageDirect

"I spoke to her on Monday and she was hopeful and confident, looking forward to putting this part of her life behind her. Last night she lost the battle."

The actress had been arrested at least four times in the last three years, for DUI, spousal abuse and assault.

media_camera Lisa Robin Kelly in a scene from That 70's Show.

Her 2012 arrest and mugshot, when she was accused of assaulting her ex-boyfriend John Michas, showed just how far the star had fallen.

In an interview with US ABC News she denied speculation that she was suffering from drug abuse.

"Absolutely not," she said.

media_camera This photo provided by Iredell County, NC, sheriffs department, Lisa Robin Kelly is shown. Kelly is free on bond after being arrested for assault. Police in the Charlotte, N.C., suburb of Mooresville arrested the 42-year-old Kelly and 61-year-old husband Robert Joseph Gilliam after responding to a disturbance at their home Monday, Nov. 26, 2012. Both are free on bond. Gilliam is charged with misdemeanor assault on a female. Kelly is charged with misdemeanor assault. They were taken to the Iredell County Detention Center and released on $500 bond apiece. They have a court date of Jan. 25. It's not known if either has an attorney. Kelly portrayed Laurie Forman, sister of Topher Grace's lead character Eric, on the FOX series, which ended in 2006. She also appeared on the TV shows 'Murphy Brown' and 'Married . . . With Children.' (AP Photo/Iredell County, NC, sheriffs department)

"There is nothing I was on or abusing at the time."

"My poor mother has to see that picture," she said of her now infamous mugshot.

"That’s not what I look like. That’s not me."

While That '70s Show launched the careers of Ashton Kutcher and Mila Kunis, Kelly left the hit sitcom in 2003 at the height of its popularity.

"I had lost a baby," she said.

"As a result of that I lost it. I lost everything and I was abusing alcohol."

She was brought back on by producers for a few episodes at the end of the fifth season but was replaced by Christina Moore another actress at the beginning of the sixth.

Her IMDB page shows only two short film credits since she finished up on That '70s Show.

She filed for divorce from her husband of just nine months, Robert Gilliam, earlier this year after their relationship turned violent.

He was convicted of domestic battery last month and sentenced to 3 years probation. He served 35 days in jail for the beating.

She reportedly had a new boyfriend who dropped her off at rehab on Monday.

She hadn't posted on her Facebook or Twitter pages in more than a month.



LISA'S CO-STARS - WHERE ARE THEY NOW?

media_camera The cast of That 70s Show (top l-r) Wilmer Valerrama with Ashton Kutcher, Danny Masterson, Topher Grace, Laura Prepon, (front l-r) Don Stark, Tanya Roberts, Mila Kunis, Lisa Robin Kelly, Debra Jo Rupp and Kurtwood Smith.

MILA KUNIS

Played Jackie Burkhart.

Since 2003, she’s voice of Meg Griffin on Family Guy and had many movie roles including Ted, Black Swan, Forgetting Sarah Marshall and The Book of Eli.

She’s been a frequent inclusion in various magazine “Sexiest Women” lists.

This year she was ranked #1 in the FHM list of “100 Sexiest Women in the World” and voted #2 on Ask men’s top 99 “most desirable” women.

She is also the face of fashion icon Dior.

She dated Home Alone star Macauley Culkin for eight years until 2010. She is now dating fellow ’70s show veteran Ashton Kutcher.



ASHTON KUTCHER

Played Michael Kelso

Became first person to get 1 million followers on Twitter after a race with CNN in 2009.

Created the MTV reality television show Punk’d .

Starred in numerous Hollywood films including What Happens in Vegas, The Guardian and No Strings Attached.

Replaced Charlie Sheen on Two and a Half Men in 2011

Plays Steve Jobs in the upcoming biopic of the Apple creator.

Married Demi Moore in 2005, divorced in 2012.

Now dating Mila Kunis.



LAURA PREPON

Played Donna Pinciotti

Series of TV roles including How I Met Your Mother, Are you there Chelsea and in Orange Is The New Black.

Was the original voice for Hayley Smith on American Dad!

Dating Chris Masterton, brother of 70s Show co-star Danny Masterton.



WILMER VALDERRAMA

played Fez

Been busy with numerous movie and TV roles including Raising Hope, Awake and Handy Manny.

Has been a victim on Ashton Kutcher’s “Punk’d” (2003) more often than anyone else (the pair are good mates)

Dated Lindsay Lohan and Mandy Moore.



TOPHER GRACE

played Eric Forman

Biggest role since the series has been as Venom in Spider-Man 3. Also appeared in Predators, and The Double.

Won the 2005 New Power Award for In Good Company (2004) and P.S. (2004).

Dated Ivanka Trump for a while.



DANNY MASTERSON

Played Steven Hyde

Has appeared on Punk’d and various other TV shows and created his owns eries Men At Work.

Also models.

Focusing on music career. He’s played Lollapalooza festival three times. Plans to release an album.

Married to singer Bijou Phillips.



Originally published as That '70s Show actress dies in rehab