Blake Lively is bubbly in blue on the set of Gossip Girl today in NYC. The fashionsita wore over-the-knee black boots paired with a baby-blue pea coat and plaid tights to fully embody her on-screen persona Serena VanDerWoodsen. Will Serena be involved in the much-talked about threesome airing on tonight’s episode? Hopefully Gossip Girl will fill us in.

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