Leighton Meester made a cheerful appearance in a floral dress after a taping of MTV's It's On with Alexa Chung at the MTV studios in New York's Times Square yesterday.

On the show, she discusses her fashion sense (and that of Blair Waldorf), the filming of Gossip Girl (which begins Monday!) and the "bad habits" of the boys in the cast.

[video url="http://www.tvfanatic.com/videos/leighton-meester-on-alexa-chug-part-i/" title="Leighton Meester on Alexa Chug, Part I"] [/video]

Follow the jump for the second half of the interview, in which the Gossip Girl star previews her new music video with the band Cobra Starship, "Good Girls Go Bad."

[video url="http://www.tvfanatic.com/videos/leighton-meester-on-alexa-chug-part-ii/" title="Leighton Meester on Alexa Chug, Part II"] [/video]

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.