Gossip Girl's Taylor Momsen Pays Tribute to Michelle Trachtenberg

Taylor Momsen Remembers 'Gossip Girl' Costar Michelle Trachtenberg in Emotional Tribute - 'My Heart is on the Floor'

Blake Lively mourns 'fiercely loyal' Gossip Girl co-star Michelle Trachtenberg following shock death at 39

The secret anguish of Gossip Girl star Michelle Trachtenberg... and the 'toxic' teenage abuse claims now resurfacing after her tragic death at 39