Kristen Stewart is celebrating!

The 28-year-old Twilight star was spotted having fun at a friend’s birthday party on Saturday evening (February 2) Silver Lake, Calif.

PHOTOS: Check out the latest pics of Kristen Stewart

Kristen was seen wearing a Puma long sleeve shirt with ripped black jeans.

Kristen was spotted grabbing coffee with rumored new girlfriend Sara Dinkin days before in Los Feliz.

If you missed it, Kristen and Mackenzie Davis will play a couple on the brink of getting engaged in an upcoming romantic comedy titled Happiest Season.