Gossip Girl Season 4 Episode 6 (Gossip Girl s04e06) with title “Easy J” aired on Monday, October 25th 2010 at 09:00 pm via CW Network.
Here is summary for Gossip Girl Season 4 Episode 6 :

Although Blair made it perfectly clear that Little J was no longer welcome in Manhattan after what happened with Chuck, Jenny is tempted by a once-in-a-lifetime opportunity to meet Tim Gunn, which could be a game changer for her future. Meanwhile, Serena discovers something about her new boyfriend, Colin, that may put an end to their relationship just as it was getting good.