Could this be Hollywood's best dressed fundraiser ever? Thanks to the crowd at Hollywood Stands Up to Cancer, presented by the Entertainment Industry Foundation and event chairs Jim Toth and Reese Witherspoon and benefiting Stand Up to Cancer, we've got outfit inspiration for days.
Jessica Alba chose a frilly white Ralph Lauren Collection dress and countered with strappy heels.
Diane Kruger lit up the red carpet in a printed ensemble, which she paired with a Charlotte Olympia clutch.
Selena Gomez was a standout in a white BCBG Max Azria Resort 2014 jumpsuit with subtle side cutouts and a Zagliani clutch.
Anne Hathaway borrowed from the boys in a Viktor & Rolf tuxedo jacket and trousers.
On the simpler side of things, Zooey Deschanel opted for a ladylike fit-and-flare dress and pointed-toe pumps.
Christina Aguilera was perhaps the most casual look of the night in a striped shirt and slim pants.
Emma Roberts looked ladylike in a long-sleeved blouse and navy skirt, which she finished with rose-gold Casadei heels and a Rebecca Minkoff clutch.