De Rossi, 41, wore a sexy beaded Naeem Khan gown and revealed that her wife since 2008, Ellen DeGeneres, had been feverishly preparing for the big night. "She actually won't allow me to see anything until tonight," De Rossi told E!.
Lawrence, who was nominated for American Hustle but lost to Lupita Nyong'o, wore a stand-out red Dior Haute Couture gown with a peplum.
After famously tripping (again) on the way to the red carpet, the American Hustle star, 23, gave Us Weekly a peek inside her purse. "I've got a Slim Jim and a protein bar," Lawrence said. "And Pop Rocks."
Who wore their swept-back short hair best?
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