Juliet is wearing a dress by Yigal Azrouel. This dress is so typical Upper East Side. I can see Blair wearing something just like it. What I love about it is the nude colour, the bodycon shape, and the cute ruffled detail on the side.
As well as the dress, Juliet is wearing a Carlos Falchi handbag and a great pair of Dolce & Gabbana leopard print heels.