Deflecting Attention

Gossip Girl star Ed Westwick celebrated his 21st birthday at Tao in Las Vegas on Friday.

His very good friend and real-life roommate, Chace Crawford, was supposed to be there. Unfortunately, Chace cancelled at the last minute (on Thursday), a source reveals exclusively to PerezHilton.com.

Geesh, what could have caused him to cancel????

[Image via WENN.]