Rosario Dawson was radiant at the 2010 BAFTA Los Angeles Britannia Awards last night in LA.

She’s the first celeb to wear a look from Christian Siriano’s Spring 2011 collection.

Her strapless white silk chiffon gathered dress is exquisite.

Christian continues to prove what a truly talented designer he is.

Rosario added Brian Atwood nude heels and a Jimmy Choo ‘Lisa’ clutch.

Credit: Style.com & Getty