'Gossip Girl': Georgina is back and blonde

michelle-trachtenberg-gossip-girl-blonde-320.jpgSpotted Georgina Sparks with a new blonde 'do. Uh-oh, it looks like she's wants to have more fun.

On the Monday, May 17 episode of "Gossip Girl," Michelle Trachtenberg returns and she's gone blonde.

The description for the episode titled "Last Tango, Then Paris" doesn't offer many clues:

"Blair has to decide between meeting Chuck at the Empire State Building or risking their future together. A gossip about Dan causes problems for Serena and Nate. Meanwhile, Georgina Sparks (Michelle Trachtenberg) returns to the Upper East Side with an agenda."

An agenda? What could that mean? Is she incognito? Check her out in the glasses.

gossip-girl-michelle-trachtenberg-blonde-02-350.jpgIt doesn't really look like a dye job to us, but a bad wig. Of course, she's brunette on NBC's "Mercy," so they couldn't have dyed it anyway.

Back to the mystery of Georgina though. What is she doing with Chuck Bass (Ed Westwick)? Ever since she went back to her scheming ways, and Chuck returned to his own scheming ways, they can't be up to any good.

gossip-girl-michelle-trachtenberg-blonde-350.jpg Any theories?

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Photo credits: The CW