Yesterday night Leighton attended a Katy Perry concert along with her boyfriend, brother and a friend. You can view 11 HQs of her leaving the concert at L-Meester.org!

Leighton continued filming the new season of Gossip Girl, along with her co-starts Blake Lively and Ed Westwick. You can see 208 HQ on the set pictures in the gallery of L-Meester.org!