Blake Lively, David Boreanaz, Ed Westwick, Kim Cattrall, Kenan Thompson, Melissa Joan Hart and more shared tributes to Trachtenberg.

From "Gossip Girl" to "The Ice Princess" and "Buffy the Vampire Slayer," here's a look at Michelle Trachtenberg's career in photos.

Soon after, she starred in popular Nickelodeon film Harriet The Spy, which followed the adventures of a sixth grader who aspired toward espionage. Trachtenberg led the film when she was just 11 years old.