Michelle Trachtenberg, the actress who rose to fame as a child star with films like “Harriet the Spy” and went on to have memorable roles on TV shows including “Gossip Girl,” has died, according to an NYPD source.

Trachtenberg's co-stars in "Gossip Girl" shared similar sentiments. Blake Lively, who played Serena van der Woodsen in the series, wrote in an Instagram story that Trachtenberg "w

Blake Lively, Sarah Michelle Gellar and other stars remembered Trachtenberg’s work ethic and friendship in social media posts.