Eugenie became friends with Trachtenberg when she lived in New York City and worked for the art auction start-up Paddle8 from 2013 to 2015. Their friendship first became public in December 2013, when they were photographed courtside at a Knicks game alongside actor Michael K.

Michelle Trachtenberg has sadly died at the age of 39. "It is with great sadness to confirm that Michelle Trachtenberg has passed away," a representative for the actor said in a statement to NBC. "The family requests privacy for their loss. There are no further details at this time."

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.