“Oh Michy … and we lived so close to one another,” Gilbert, 60, wrote via Instagram on Wednesday, February 26, alongside a photo of her and Trachtenberg from their 1996 film A Holiday for Love. “My heart aches for your family and all those who loved you so.”

Hollywood is mourning the loss of actress Michelle Trachtenberg. The Gossip Girl and Buffy the Vampire Slayer alum was found unconscious inside of her Midtown West apartment in New York City, police sources confirmed to Us Weekly on Wednesday,

Michelle Trachtenberg's cause of death was revealed Thursday after the 39-year-old actress was found dead in New York City Wednesday morning.

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

Eugenie became friends with Trachtenberg when she lived in New York City and worked for the art auction start-up Paddle8 from 2013 to 2015. Their friendship first became public in December 2013, when they were photographed courtside at a Knicks game alongside actor Michael K.

Michelle Trachetenberg's cause and manner of death will remain undetermined after her family objected to having an autopsy conducted on her body.