She was only 39 years old at the time of her death ... and Georgina Sparks on Gossip Girl. NCIS: Los Angeles brought on Michelle as a surprise guest star in Season 5. Michelle appeared as Lily ...

This week, the NCIS ... LA co-star Eric Christian Olsen's brother, David Paul Olsen, and the pair share two kids, son River Isaac, 11, and daughter Sierra Esther, who is eight years old.

In 2010, he guest starred in an episode of NCIS: Los Angeles as Marine Corporal Andrew Peterson. The franchise announced Stowell’s new role on Instagram in a joint post with the actor.