Olivia Culpo Celebrates SoBe's 21st Birthday in Vegas

Olivia Culpo sports a sleek and long ponytail while arriving for SoBe’s 21st Birthday Party held at Foxtail Pool at SLS Las Vegas on Saturday (September 3).

The 24-year-old model kicked off the party with singers Charli XCX and Tinashe who performed at the event.

PHOTOS: Check out the latest pics of Olivia Culpo

“In Vegas to celebrate @drinksobe 21st Birthday! HAPPY BDAY SOBE! @slslasvegas #SoBeNotSorry #VEGASbaby,” Olivia captioned on Instagram with a chic pic. Check it out below!

25+ pics inside of Olivia Culpo, Tinashe, and Charli XCX…