David Boreanaz and Ed Westwick are among Michelle Trachtenberg's famous castmates who have spoken out following her tragic death at the age of 39. "So very sad. Horrible news. RIP and prayers to her ...

Thankfully, being a fan of the series made the process easier for her. "What really helped and was very lucky was the fact that I was such a huge fan of the show that I understood how things were ...

The death of Michelle Trachtenberg shocked many. Known best for her roles in Buffy the Vampire Slayer and Gossip Girl, ...

Chace Crawford and Michelle Trachtenberg pose for a selfie Alyson Hannigan ... I've been a huge fan of hers since I was a baby, and I was a huge defender of Dawn in the Buffy days.

“Her portrayal of Georgina Sparks was an iconic fan favorite and grew from a one ... Our thoughts are with her family,” Schwartz and Savage said. Hannigan, for her part, expressed grief ...

Craig Thomas tells PEOPLE that 'HIMYM's flashbacks and storytelling structure differentiated it from 'Friends' ...

"My heart aches for your family and all those who loved you so…" Alyson Hannigan, Trachtenberg's co-star on ... "Her portrayal of Georgina Sparks was an iconic fan favorite and grew from a one season ...

"David Boreanaz, Alyson Hannigan and Emma Caufield also expressed ... Prior to joining the cast, Trachtenberg described herself as a "HUGE fan" of the WB series, inspired by a 1992 movie of ...