'Gossip Girl' and 'Glee' get together to 'Rock Your Shine'

jessica-szohr-glee-Op.jpg Spotted: Vanessa Abrams in the horizontal position with yet another couple. Perhaps she's tired of the writing type and wants someone to sing her to sleep .... Is this college kid about to swipe out Danny dearest for a high school Glee Club stud?

Don't fret, Dan and Vanessa fans. Turns out the pictured cuddle-fest in a hammock is just part of the "Rock Your Shine" campaign for Op.

This spring's upcoming ad campaign for the juniors clothing brand will feature stars like "Gossip Girl's" Jessica Szohr and "Glee's" Cory Monteith and Dianna Agron in an imagined summer block party ... so expect to see lots of barbecuing and bikinis.

Other celebs in the campaign include R&B singer Cassie, "90210's" Trevor Donovan, and Alex Meraz of "The Twilight Saga: New Moon and Eclipse."

Here's some behind-the-scenes photos from the shoot for your viewing pleasure: