By Rita Kokshanian
Updated Jan 04, 2016 @ 4:15 pm
Julia Stiles Lead
Credit: 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.

Congratulations to the happy couple!