A role in Buffy the Vampire Slayer came in 2000 with Trachtenberg cast as Dawn Summers until the show ended three years later.
Later film roles included the teen comedy EuroTrip, Gregg Araki’s acclaimed drama Mysterious Skin and a lead in the Disney drama Ice Princess.
The next few years saw roles in shows such as House and films such as 2006’s Black Christmas remake before she nabbed the role of Georgina Sparks in the teen drama series Gossip Girl.
Trachtenberg was a child actor who started her career at the age of three in commercials before featuring in the Nickelodeon show The Adventures of Pete & Pete and the soap opera All My Children.
She later scored her first lead film role in the comedy adventure Harriet the Spy alongside Rosie O’Donnell.