The former 'Harry Potter' star flew the flag for the Brits at the bash, where she looked quite the English rose.
Emma donned a trusty LBD from the Calvin Klein Collection with her hair pinned up as she walked the cream carpet at the Four Seasons Hotel in Beverly Hills.
'The Perks Of Being A Wallflower' actress topped the evening off by picking up the Calvin Klein Collection Emerging Star Spotlight Award. Seeeee, she's not just a pretty face.
Emma posed with other winners including Elle Fanning, Cate Blanchet and Sarah Jessica Parker.
However, not everyone on the red carpet went for the more classic fashion option like Emma did.
Step forward 'Glee's Lea Michele, who was sporting a bizarre see-through dress.