The 23-year-old eschewed her usual preference for thigh-grazing minis, in favour of a stunning white appliqué Chanel Couture gown with sheer skirt - the hottest red carpet trend of the moment.
And as current face of Chanel's Mademoiselle handbags, it comes as little surprise to see the starlet showcasing a design from the French fashion house.
Blake added her own California-girl touch to the frock, by teaming it with a teased fishtail side plait, glittering gold hair piece and a smattering of Lorraine Schwartz jewels.
What do you think of Blake's Chanel Couture? Vote below!
Click on our gallery below to see our pick of Miss Lively's Perfect 10 style moments:
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