Designers Tory Burch and Georgina Chapman (of Marchesa) were spotted on the set of the CW’s hit show, Gossip Girl.

The pair shot separate scenes for an episode scheduled to air October 5th. While most are keeping their mouths shut regarding the two guest stars, it was revealed that part of the show takes place on a set similar to Burch’s office.

“I am a huge fan [of ‘Gossip Girl’],” Chapman said. Despite having appeared in several movies prior to the taping, the 33 year-old former model “was very nervous [on-set].”