Lea Thompson and Others Offer Kristen Johnston Their Condolences After Her Sister's Death

Lea Thompson and Patricia Arquette were among the many people who offered their condolences to actress Kristen Johnston, who posted about her sister's death on Twitter on Tuesday morning.

In a tweet, the Third Rock From the Sun actress told followers that her sister died on Monday. "Yesterday my beautiful younger sister Julie lost her battle with addiction," she wrote, sharing a photo of the two together. "I know she's finally at peace. She had the best belly laugh in the world."

Yesterday my beautiful younger sister Julie lost her battle with addiction. 💔
I know she’s finally at peace. She had the best belly laugh in the world. pic.twitter.com/tZZYlXbZfF

— kristen johnston (@thekjohnston) August 18, 2020

Thompson and Arquette were among the many fans and other celebrities who offered support for the actress after she tweeted that her sister had died. Thompson wrote that while she was sorry for the actress' loss, she was glad that Johnston had found recovery from her own struggles with addiction. "Cunning baffling and powerful. For sure," she tweeted.

I am so so sorry. And so grateful for your recovery. Cunning baffling and powerful. For sure. 💔

— Lea Thompson (@LeaKThompson) August 18, 2020

I’m so sorry. Sending you light.

— Patricia Arquette (@PattyArquette) August 18, 2020

Other celebrities that shared messages of sympathy for the Mom star included Special Olympics athlete Tank Schottle, actress Quinn Cummings, and actress Kiersten Warren, who shared a GIF with a flower offering prayers. Warren also responded to Johnston's memories about her sister's laughter. "The world is so much poorer with the loss of a good belly laugh," she wrote.

Kristen am very sorry of losing your sister julie I know she watching over you and I know she inside of your beautiful heart I love you Kristen am here for you I be thinking of you ❤️

— Tank Schottle (@TankSchottle) August 18, 2020

May her memory be a blessing to her loved ones.

I bear witness to your loss; I wish there was more I could do.

— Quinn Cummings (@quinncy) August 18, 2020

Sending #light and #strength to you and all of her loved ones! Thinking of you deeply today. 🙏

— Perez (@ThePerezHilton) August 18, 2020

So sorry Kristen. So sorry.❤️🖤

— Rex Chapman🏇🏼 (@RexChapman) August 18, 2020

Comedians Judy Gold and Amy Phillips both retweeted Johnston with their condolences. "My heart is with you," Phillips tweeted.

May her memory be for a blessing. Rest In Peace. 💔 https://t.co/byZ4xvbNOZ

— Judy Gold (@JewdyGold) August 18, 2020

Kristen, I’m so very sorry for the loss of your beautiful sister. My heart is with you. https://t.co/3AZaM3LoEc

— Amy Phillips (@AmyPhillips_) August 18, 2020

Some fans and followers offered sympathy by sharing their own experiences with losing loved ones to addiction.

Sorry for your loss. My daughter lost her battle last year right before her 31st birthday. https://t.co/m0ssKeyG5l

— Preta (@Preta52185904) August 18, 2020

So sorry for your loss. My brother died from alcohol addiction. https://t.co/zCoWxZUO4q

— Jeanne M (@Jeannelm62) August 18, 2020

Lost my older brother 18 months ago after his body finally gave out after years of substance abuse. My heart goes out to you as this is never easy and the pain stays with you for a long time. Lean on your friends and family. Condolences. https://t.co/VubNOI7tqV

— GUM FRIDAYS (@GUM_FRIDAYS) August 18, 2020

Johnston thanked her followers and colleagues for support she's received since her sister's passing.

Thank you everyone for your outpouring of love & support. It means a lot to me. 💋

— kristen johnston (@thekjohnston) August 18, 2020

Johnston has spoken publicly about her own struggles with addiction in the past, many of which she detailed in her 2012 book Guts. In a 2013 op-ed for The New York Times, she revealed that she'd been sober for over six years. She began SLAM NYC (Sobriety, Learning and Motivation), which intended to open the city's first addiction-recovery high school, according to The Times.

After getting sober herself, Johnston became an advocate for addiction and recovery nationwide. "Drugs are now the No. 1 cause of deaths in emergency rooms," the actress wrote in her 2013 op-ed. "A minuscule percentage of those who suffer can afford to get help, because most insurers refuse to cover treatment. We imprison those whose only crime is being an addict, and I can't even get the New York City schools to let my organization, SLAM, NYC, build a sober high school."

Johnston's manager did not respond to Newsweek's emailed request for comment.

Kristen Johnston
Kristen Johnston Signs Copies Of Her New Book "Guts" at Book Soup on March 18, 2013 in West Hollywood, California. Johnston tweeted that her sister had died after battling addiction on Monday. Getty/Gabriel Olsen/FilmMagic