Celebrity Julia Stiles Is Engaged—See Her Gorgeous Ring By Rita Kokshanian Rita Kokshanian Rita Kokshanian is a Los Angeles-based writer and editor who covers celebrity, fashion, beauty, and lifestyle. She was previously an Assistant Editor for InStyle and is currently the Senior Copywriter at The Grind. InStyle's editorial guidelines Updated on January 4, 2016 @ 04:15PM Pin Share Tweet Email Photo: Dimitrios Kambouris/WireImage Now this is a Christmas gift to remember. Julia Stiles received a very special present on Christmas Eve—an engagement ring. The Save the Last Dance star and her boyfriend Preston J. Cook became engaged on the holiday, and she's showing off her new bling on Instagram. "Best Christmas Ever!" Stiles captioned a shot of her gorgeous engagement ring. In the photo, she and Cook, a camera assistant, are holding hands on the beach. And although they haven't known each other for too long, it seems that Cook has his bride-to-be's style all figured out—her round-cut diamond is set on a thin gold band, creating a simple but completely elegant ring. PHOTOS: 13 Non-Traditional Celebrity Engagement Rings Congratulations to the happy couple!