And though Trachtenberg would go on to other prominent roles — like the bad girl socialite Georgina Sparks in “Gossip Girl” — for me, Dawn remains Trachtenberg’s most me

Buffy the Vampire Slayer fans are mourning the heartbreaking death of Michelle Trachtenberg with a walk down memory lane. After the actress passed away at the age of 39 on Feb. 26, Buffy lovers are looking back on her iconic performance as Dawn Summers and planning rewatches of the series in her honor.

Blake Lively, Sarah Michelle Gellar and other stars remembered Trachtenberg’s work ethic and friendship in social media posts.