The lovebirds rang in 2014 with some of their closest friends in Mammoth Lakes, Calif., a source reveals exclusively to E! News.
The musician and former Miss Universe spent the evening at the Underground Lounge for a Great Gatsby-themed glamorous soirée. The pals sipped on Ace of Spades Champagne and Magnum Grey Goose.
"Olivia and Nick had a private table with bottle service," the source said. "They were enjoying themselves, and everyone was respecting their privacy."
The couple spent the night dancing together and with their friends to tunes provided by well-known DJ's Remix Artist Collective.
"They seemed like a happy mountain couple," the source added about the duo, who spent several days before the holiday enjoying the beautiful scenery in the mountain location.
The 21-year-old brunette beauty shared a collage-style snapshot to her Instagram account of the fun gang with their trademark party hats and streamers.
"2014 looks better than ever," Culpo captioned the festive photo.
And what about the highly anticipated midnight kiss?
"They celebrated with confetti poppers," the source dishes about the cute pair. "When it turned midnight, balloons and confetti dropped from the ceiling, and they shared a kiss."
Happy New Year, Nick and Olivia!