Leighton Meester as Blair Waldorf and Penn Badgley as Dan (credit: GIOVANNI RUFINO/THE CW)

 
SERENA POSES AS BLAIR AT AN IMPORTANT MEETING

Blair enlists Serena to be her stand-in at an important meeting when Blair finds herself needing to be in two places at the same time. Meanwhile, Ivy and Lola (guest star Ella Rae Peck) team up to help Chuck with a personal vendetta, and Nate makes a decision about the future with Diana Payne (guest star Elizabeth Hurley). Penn Badgley also stars. Andy Wolk directed the episode written by Matt Whitney.

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