Gossip Girl Season 4 Spoilers: Guest star revealed!

I know we've posted spoilers on guest stars but this one's different.. check out the spoilers on how this one's different!

Project Runway's very own Tim Gunn will be joining our favorite upper East Siders during an episode in late October. No word yet on what his role will be but we'll be sure to post more spoilers on his guest star role as we get them!

Source: Ausiello Files