Chace Crawford: Back to School!

Chace Crawford gets back into his school uni and gives photographers a big smile while shooting scenes for Gossip Girl on Thursday in Long Island City, New York.

Chace celebrated his 23rd birthday last Friday and had a big bash attended by Blake Lively, Penn Badgley and Lydia Hearst.

The new season of Gossip Girl starts September 1st. Recent ads, however, have stirred controversy lately.

10+ pictures of Chace Crawford heading back to school…