Britney Spears' #1 hit song "Womanizer" is featured in a brand new 'Gossip Girl' promo that centers on The CW drama's resident bad boy and the Upper East Side's master manipulator, Chuck Bass (played by Ed Westwick).

Next on 'Gossip Girl' - "Pret-a-Poor-J" (airs Monday 10/27 8:00 ET)
Jenny (Taylor Momsen) befriends a young model, Agnes (guest star Willa Holland), who encourages Jenny to not only explore her wild side, but also confront her boss, Eleanor Waldorf (guest star Margaret Colin), who is attempting to "borrow" Jenny's designs. Serena (Blake Lively) and Dan (Penn Badgley) agree to attend an art opening at Rufus' (Matthew Settle) gallery as friends, but the outing gets a little uncomfortable after Serena meets an artist, Aaron Rose (guest star John Patrick Amedori), and realizes they have an instant chemistry. Blair (Leighton Meester) attempts to seduce Chuck (Ed Westwick), but it proves tougher than she ever imagined. Chace Crawford and Jessica Szohr also star. Vondie Curtis Hall directed the episode written by Amanda Lasher