Princess Eugenie is mourning the loss of her “special friend,” actor Michelle Trachtenberg. The royal posted a moving tribute to the late actor on her Instagram Story this week. Trachtenberg, 39, was confirmed dead on Wednesday after her mother discovered her in her New York City apartment.

Sarah Michelle Gellar is paying tribute to her “Buffy” sister, Michelle Trachtenberg, who died on Feb. 26 at 39 years old. Trachtenberg, who had been acting since age three, was found unresponsive in her New York City apartment,