India, Feb. 28 -- Princess Eugenie is honouring her longtime friend, Michelle Trachtenberg, who was found dead at her home in New York City on Wednesday. Taking to social media on Thursday, the royal family member penned an emotional note to the Gossip Girl star following her tragic death at 39.

"Goodbye special friend. You are so loved and missed. Thank you for so many memories of laughter and fun. You were so thoughtful and generous and soooo funny," Princess Eugenie wrote on her Instagram Story, which featured a black and white photo of herself with Trachtenberg.

In her heartfelt note, the princess recalled how the Buffy the Vampire Slayer actress used to order food with "precision." "My favourite was listening to you order food, alw...