Preston J. Cook proposed to 10 Things I Hate About You star Julia Stiles with a diamond 14 carat rose gold round-cut black diamond solitaire ring which costs approximately $35k. Stiles said yes and is off the market.

The Bourne actress who is set appear in another Bourne installment can now add wedding planning to her list of to-dos.

Stiles debuted the engagement ring from her camera assistant turned fiance on Instagram.

In the photo, the Save the Last Dance star captioned, "Best Christmas Ever!" with a happy face emoji, holding hands with Cook.

The two got engaged on Christmas Eve in Isla Grande, Colombia and Stiles posted the news to Instagram on Jan 4.

Stiles previously dated actor David Harbour and has been romantically linked to actor Joseph Gordon-Levitt in the past. This will be her first marriage.

Stiles and Cook met on the set of Go With Me due to hit theaters in April 2016. Cook recently worked on Leonardo DiCaprio's drama The Revenant playing in theaters now.

The rose gold ring is very modern and simple looking and tells a story on its own as it graces Stiles' finger. She proudly shows off the exquisite creation to her Instagram followers. See the ring here: