New York Fashion Week begins in just a few hours, but all fashionista eyes were on Hollywood last night.
Saint Laurent creative designer Heidi Slimane hosted a star-studded fashion show at the Palladium for a guest list that included Lady Gaga, Justin Bieber, Ellen DeGeneres, Portia de Rossi, Zac Efron, Sylvester Stallone, Lily Collins, Emma Roberts, Demi Moore, Jane Fonda, Rosie Huntington-Whiteley, Sam Smith, Lenny Kravitz, Zoe Kravitz, Courtney Love, Miranda Kerr and Tobey Maguire.
Pamela Anderson was also there with sons Brandon Lee and Dylan Lee. Eighteen-year-old Dylan stars in Saint Laurent's new ad campaign.
Slimane showed 93 looks on 71 models. Inspired by Los Angeles' music scene, the show coincided with the upcoming Grammys.
Gaga's hair was a mop top of loose blonde curls. She wore a gold bomber jacket and black pants. Before the show began, she chatted with Bieber while downing some champagne at the bar.