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.

Michelle Trachtenberg was found in her New York City apartment, and the death is not believed to be suspicious, police said.

Actress Michelle Trachtenberg, who rose to fame as a child star in the 1990s and 2000s, has died aged 39. Police in Manhattan said they responded to an emergency call on Wednesday morning, and found Trachtenberg "unconscious and unresponsive". She was pronounced dead at the scene.