Sarah Michelle Gellar mourned the death of “Buffy the Vampire Slayer" co-star Michelle Trachtenberg in an Instagram post.

News of Michelle Trachtenberg's death prompted tributes from her friends and former "Buffy," "Harriet the Spy," and "Gossip ...

Blake Lively, Sarah Michelle Gellar, David Boreanaz, Ed Westwick, Kim Cattrall, Kenan Thompson, Melissa Joan Hart and more ...

Sarah Michelle Gellar has paid tribute to her former Buffy The Vampire Slayer co-star Michelle Trachtenberg following her ...

Sarah Michelle Gellar has poured her heart out in a gut-wrenching tribute to her "Buffy the Vampire Slayer" costar Michelle ...

Michelle Trachtenberg’s former “Buffy the Vampire Slayer” costar Sarah Michelle Gellar is looking back at their time together ...

Sarah Michelle Gellar, Taylor Momsen and Blake Lively are among those paying tribute to Michelle Trachtenberg, who died ...

Fans of Buffy the Vampire Slayer will recognize the caption as a reference to a beloved quote from the show, spoken in the ...

Sarah Michelle Gellar paid tribute to the late Michelle Trachtenberg after the actress died at age 39.

Actor Sarah Michelle Gellar paid tribute to her “Buffy the Vampire Slayer” costar Michelle Trachtenberg a day after police found the 39-year-old dead in her New York City home.

Sarah Michelle Gellar played Michelle Trachtenberg’s older sister on Buffy the Vampire Slayer for seven seasons, and their ...

Gellar's tribute to her late costar echoes a monologue she delivered in the supernatural drama's season 5 finale.