Blake Lively broke her social media silence on Wednesday to pay tribute to her late "Gossip Girl" co-star Michelle Trachtenberg, who died Wednesday morning at 39. In an Instagram Story, Lively remembered Trachtenberg as a "fiercly loyal" and "kind person,

Blake Lively addressed the passing of her "Gossip Girl" costar Michelle Trachtenberg after a long social media silence.

Blake Lively has shared an emotional tribute to her Gossip Girl co-star Michelle Trachtenberg following her death. It was confirmed by police yesterday that the Buffy star had passed away aged 39, with her death not being treated as suspicious after being found in her New York City apartment.