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.

Chace Crawford has honoured co-star Michelle Trachtenberg following her sudden death at age 39. The actor described his former Gossip Girl co-star as "a force of nature" in the wake of her passing. Trachtenberg was found dead in her New York City apartment on Wednesday morning.

Michelle Trachtenberg's former co-stars from “Gossip Girl” and "Buffy the Vampire Slayer" paid tribute to the actress following her untimely passing on Wednesday.