The Gossip Girl family is mourning Michelle Trachtenberg. Chace Crawford, who played Nate Archibald on the CW show, posted a tribute to the late actress, who was found dead in her apartment Wednesday morning.

Sarah Jessica Parker's character rocked the stunning Vera Wang gown during the franchise’s first film based off the hit TV series.

The actress played socialite Georgina Sparks on the hit CW series Michelle Trachtenberg’s Gossip Girl costars, Ed Westwick and Chace Crawford, are paying tribute to her after her sudden death at age 39.