Melissa and Joan Rivers on Kelly Osbourne's 'scary' seizure
- Photo: Chris Pizzello/Invision/AP1 of 11
- Photo: Jason Merritt/GettyImages.com2 of 11
- Photo: Harry Pluviose/Retna Ltd.3 of 11
- Photo: Evan Agostini/Invision/AP4 of 11
- Photo: Jen Lowery/Splash News5 of 11
- Photo: Derek Storm/Splash News6 of 11
- Photo: Steve Granitz/WireImage7 of 11
- Photo: Lester Cohen/WireImage8 of 11
- Photo: Jamie McCarthy/Getty Images North America9 of 11
- Photo: FayesVision/WENN10 of 11
After witnessing their fellow "Fashion Police" co-host Kelly Osbourne suffer a seizure on set, Joan and Melissa Rivers are opening up about Thursday's terrifying events and how they sprang to action when no one else would.
RELATED: Fashion don'ts
After Melissa recognized Kelly was exhibiting signs of a seizure, she reveals to ET that her instinct kicked in and she, with the help of her mother, was able to practice the proper procedures until help arrived.
"More than anything it was just scary," she recalls. "I just laid on the ground holding on to her until the paramedics came."
Keeping Kelly calm was the mother-daughter duo's most difficult task, Melissa explains.
"I just laid on the ground with her until we got the seizure to stop," she says. "She was disoriented and I just laid on the ground with her to keep her down because she kept trying to stand up."
Melissa further explains, "I made her look at me. I said, 'I'm here, stay with me, it's all fine.' I explained where we were."
RELATED: Most tattooed babes in Hollywood
After the seizure ended, Osbourne wanted to continue taping the show but Joan insisted she go to the hospital.
Kelly addressed the events of the day herself Thursday night in a tweet to her fans thanking them for their support.
"Thank U all 4 UR beautiful well wishes," she wrote. "Yes I did have a seizure they are just trying to figure out why."
Behind the Scenes
Kendall Jenner and more stars share the best behind-the-scenes photos from the Cannes Film Festival on today's Celebs Gone Social.Watch Video »
Check out Emma Stone, Emily Blunt, and Julianne Hough's style statements on this week's OMG Celeb Fashion hosted by Wonderwall's Kirby Kristen.Watch Video »
Blake Lively gets celery up her nose, plus more of her funniest Instagram moments on today's Celebs Gone Social.Watch Video »
"#RichKids" newcomer Taylor-Ann Hasselhoff dishes about the drama on the new season and about spending QT with her dad, David Hasselhoff!Watch Video »
DIY Celeb Makeup
We show you how to get Taylor Swift's blue eye shadow look on "DIY Celeb Makeup."Watch Video »
Rumer Willis and "Dancing With the Stars" partner Val Chmerkovskiy blow off steam by making funny videos on today's Celebs Gone Social.Watch Video »
Like us on Facebook?
UP NEXT'Magic' Man
From Crowd Ignite