It’s no secret that Taylor Momsen and Tim Gunn didn’t exactly become fast friends when Gunn filmed his cameo on Momsen’s show Gossip Girl. Last month, the Project Runway fashion guru trash-talked the 17-year-old actress-turned-rocker, calling her a “diva” and “pathetic.”

But how do the two actually gel onscreen? Judge for yourself.

In this clip from next week’s “Easy J” episode, Momsen’s character, aspiring fashionista Jenny Humphrey, comes face-to-face with the 57-year-old Gunn. Do you sense tension between them, or were the two professional enough to put their differences aside when the cameras were rolling? Share your opinion in the comments section.