Penn Badgley: MET Ball with Blake Lively!

Penn Badgley suits up in Calvin Klein for the MET Ball held at NYC’s Metropolitan Museum of Art on Monday (May 3).

The 23-year-old Gossip Girl stud and his co-star (and real-life girlfriend) Blake Lively attended one of the after-parties on the 18th floor of The Standard Hotel. Co-star Chace Crawford (and his manager) also attended the private party.

Blake wore a sexy Marchesa dress on the red carpet but changed into more comfortable clothing for the party — a white tee and simple skirt!

15+ pictures inside of Penn Badgley at the 2010 MET Ball…

Posted To:2010 MET Ball Blake Lively Chace Crawford Penn Badgley