Laguna Beach reunion in the Big Apple!

Lauren Conrad shared photos on Instagram Monday from a festive get-together with former costar Trey Phillips.

PHOTOS: Lauren Conrad's BFF history

"Reunion on ice with Trey Phillips," Conrad, 26, captioned a shot of her and Phillips smiling for the camera. In another photo of a skating rink and Christmas tree in NYC, she wrote, "Ice skating in the park . . ."

The always-fashionable Conrad dressed up in a cute winter hat and scarf for the outing, but suffered an unfortunate wardrobe mishap along the way.

"Just left my new favorite hat in a cab," she tweeted. "It will be missed."

PHOTOS: Lauren Conrad's love life

Though Conrad has kept in touch with some of her former reality show costars, the fashion designer told Us Weekly in September she doesn't talk to Kristin Cavallari anymore.

PHOTOS: Hills stars -- how they've changed

And during an appearance on Watch What Happens Live Monday, Dec. 3, Cavallari, 25, told host Andy Cohen that The Hills was "pretty fake," but her "distaste" for Conrad on the show was the real deal.

"I feel like [producers] put things in our heads," she clarified. "I mean, we were 17 and 18. They made it a lot worse than it was."

This article originally appeared on PICTURES: Lauren Conrad Goes Ice Skating With Laguna Beach's Trey Phillips