Katie Cassidy With Melissa Leo

Mandy Moore

Jacki Weaver With Melissa Leo

John Hawkes With Barbara Hershey

Jennifer Lawrence

Camila Alves With The Kardashians

Mark Ruffalo And Wife

Josh Henderson With Nicole Richie

The stars came out in scores this evening to celebrate pre-Oscars at the QVC Red Carpet Style party at the Four Seasons. Bold-faced names who graced the carpet included Nicole Richie, Kim and Kourtney Kardashian, Odette Yustman, Jennifer Lawrence, Jackie Weaver, Katharine McPhee, Kelly Rutherford, Sarah Hyland, Mandy Moore, Helena Bonham Carter, Jennifer Carpenter, Camila Alves, Sebastian Stan, Shay Mitchell, Donald and Melania Trump, Jessalyn Gilsig, Mark Ruffalo, Mark Salling, Rebecca Gayheart, Victoria Justice, Karina Smirnoff, Katie Cassidy, Joe Maganiello with fiancé Audra Marie, Brenda Song, Lisa Rinna, and Melissa Leo, among many others. Famed designers who collaborate with QVC included Dennis Basso, Shoshanna, Mad Men costume designer Janie Bryant, Marc Bouwer, Megan Fabulous, Lori Goldstein, Joan Rivers, and others.

Donald And Melania Trump

The Kardashian sisters looked amazing as always, in attendance to sell their current collection live on QVC. Kim sported a gold sequin bolero from the K-Dash collection; Kourtney was in a gold sequined miniskirt also from their QVC collection. "We love working with QVC," gushed Kim, explaining that it makes the sisters feel good to bring their design savvy to a wider audience. Also on the carpet was fashionista and style icon Nicole Richie. She stunned in a vintage Alaia black mini dress and YSL shoes, saying "I'm so excited to be here celebrating with QVC tonight-my favorite QVC designer is Isaac Mizrahi."

Kim And Kourtney Kardashian

Marc Bouwer-who also has a line with QVC-was one of the red carpet highlights from the evening. Among celebrities who wore his couture gowns were Kat McPhee, Lisa Rinna, and Oscar nominee Melissa Leo (who paired hers with earrings by Forevermark). Oscar nominee Jennifer Lawrence said she was excited to kick off the weekend of celebration with QVC, and Victoria Justice said that one of her favorite things to do in the late night hours is watch QVC. Also on the carpet were cute young moms Camila Alves and Rebecca Gayheart (in a black-and-white Phillip Lim silk minidress), reporting that their babies are happy and healthy and their leading men are so supportive.

Camila Alves With Kat McPhee

Inside the party, the stars enjoyed lush surroundings at the Four Seasons despite an unexpected early spring rain. Mandy Moore, an Oscar evening performer this year, said that "QVC went all out with this party and I'm honored to be here." Odette Yustman, whose favorite QVC designer is Rachel Zoe, said "This party is so exciting!" Other celebs who palled around inside included Disney star Victoria Justice and Brenda Song, Gossip Girl's Sebastian Stan and Shay Mitchell from Pretty Little Liars.