

S04E16
While You Weren't Sleeping
Aired February 21, 2011
Free, with no ads. Tick off what you watch and see what airs next.
Summary
Blair tries to speed up her career and Serena is forced to make a difficult decision. Chuck and Lily’s relationship remains icy in the aftermath of Lily’s betrayal. Meanwhile, Eric has a drama filled 18th birthday party.
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