Michelle Trachtenberg got emotional about starring in 'Harriet the Spy' with Rosie O'Donnell on the film's 25th anniversary.

Blake Lively, Rosie O'Donnell and other Hollywood figures are paying tribute to Michelle Trachtenberg, who died at 39.

Michelle Trachtenberg, the actor best known for "Gossip Girl," "Ice Princess" and "Buffy the Vampire Slayer," died at age 39.

Rosie O’Donnell has reacted to the death of her Harriet the Spy costar Michelle Trachtenberg, who died at the age of 39.

Rosie O’Donnell paid tribute to her former co-star, Michelle Trachtenberg, who was found dead in her New York City apartment ...

Trachtenberg first rose to fame as a child star in the 1996 movie Harriet the Spy. Her Hollywood career continued when she ...

Michelle Trachtenberg's death Wednesday left her former co-stars like Blake Lively, Rosie O'Donnell, Melissa Gilbert and ...

Michelle Trachtenberg's death Wednesday left her former co-stars like Rosie O'Donnell, Melissa Gilbert and Kenan Thompson ...

Michelle Trachtenberg, a former child star who appeared in the 1996 “Harriet the Spy” hit movie and went on to co-star in two ...

From Ed Westwick to David Boreanzaz, how the casts of Gossip Girl, Buffy, and more are paying tribute to Michelle ...

O’Donnell was Trachtenberg’s A-list co-star in Harriet the Spy, the 1996 kids movie that marked Trachtenberg’s first major ...

Rosie O'Donnell, who co-starred alongside Michelle Trachtenberg in Harriet The Spy, gave a statement to People after the ...