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.

The pair had reportedly been friends since meeting in the early 2010s in NYC, with the royal sharing a framed photo of the two along with a touching tribute.

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,