Gossip Girl - Lady Gaga Gossip Girl - Lady Gaga

Gossip Girl is going Gaga.

On Monday's episode of Gossip Girl, Blair arranges a private concert for the NYU theater kids by pop superstar Lady Gaga, who performs her crack-tastic new single, "Bad Romance."

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Gaga appears on the stage in a blonde fright wig and a red dress so voluminous she needs four backup dancers to move it around the stage for her.

Watch the sneak peek below: