Blake Lively wore a dress by one of her go-to labels- Marchesa - for the party celebrating 100 episodes of 'Gossip Girl'.
The Spring 2012 dress with a sheer, embroidered panel & tassles is extremely tricky to pull off, Blake just about manages it thanks to her height.
An updo, white earrings, pink lips & neutral heels completed her almost costume-y look.
Image Sources: nymag.com/fashion, justjared.buzznet.com