21/10/2015 07:51 BST | Updated 21/10/2015 08:59 BST

Kendall Jenner, Jourdan Dunn And Gigi Hadid Upstaged By The Backstreet Boys At H&M Balman X H&M Catwalk Show

Kendall Jenner, Karlie Kloss, Jourdan Dunn, Victoria’s Secret Angel Alessandra Ambrosio and the Hadid sisters were joined at the Balmain x H&M catwalk launch by the "Balmain Army's" surprise new recruits... The Backstreet Boys.

And Gigi Hadid and Jenner couldn't hide their excitement:

A photo posted by BALMAIN (@balmainparis) on

The New York show marked the official launch of the collection, which will cost a fraction of the Balmain main line when it goes on sale on 4 November.

The FROW was every bit as star-studded as the catwalk, with Rosie Huntington-Whiteley, Alexa Chung, Lewis Hamilton, Ne-Yo, Ellie Goulding, Diane Kruger and Kendall's sister Kylie Jenner taking in the outfits, before singing along to Backstreet classics.

Photo gallery Balmain X H&M Launch See Gallery

It wasn't only Nick Carter and co who wowed the crowds with their moves. The show began with a choreographed dance routine, (which we've been practising in the office all morning):

A video posted by George Inaki (@georgeinaki) on

The show also saw Gigi Hadid's sister Bella return to work less than two weeks after revealing she's been suffering from Lyme disease.

Goodnight #balmainarmy also we watched backstreet boys

A photo posted by Bella Hadid (@bellahadid) on

The model shared her love of the Backstreet Boy's performance on Instagram, and who can blame her as they performed ALL their hits...

A video posted by George Inaki (@georgeinaki) on


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Scroll through the gallery below for all the women's wear and men'swear looks from the catwalk, plus photos of The Backstreet Boys' performance:

Photo gallery Balmain X H&M Collection Launch Catwalk See Gallery