Balmain x H&M: Gigi, Kendall & THE BACKSTREET BOYS?!

Everyone loves H&M designer collabs. Everyone loves Balmain. And, you best believe, everyone STILL loves the Backstreet Boys. Last night, A-listers and the coolest of the cool New Yorkers got to experience all three thanks to Balmain's Olivier Rousteing, who launched #HMBALMAINATION with a bang and a boy band. VIPs weren't just treated to a pre-release shopping experience. Oh no. There was a full-on fashion show, in which our girls Gigi, Bella, Kendall, and Karlie took center stage. Afterwards, the party continued at 23 Wall Street with a post-show performance by none other than the FREAKIN' Backstreet Boys. They're back, baby.

The Balmain x H&M collection hits stores on November 6th. Get your credit cards out, people!

Who was there: Guests included Gigi Hadid, Olivier Rousteing, Karlie Kloss, Kendall Jenner, Kylie Jenner, Jourdan Dunn, Bella Hadid, Dudley O'Shaughnessy, Ellie Goulding, Alexa Chung, Leigh Lezark, Diane Kruger, June Ambrose, Chelsea Leyland, Harley Viera-Newton, Laura Love, Coco Rocha, Soo Joo Park, Jessica Hart, Cameron Russell, Julia Restoin Roitfeld, Maryna Linchuk, and Rosie Huntington-Whiteley.

[Photos courtesy Getty]