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

Kendall, Jourdan, Gigi And... The Backstreet Boys Take To The Stage At H&M Catwalk

Ellen Wallwork— The Huffington Post UK

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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:

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.

Balmain X H&M Launch

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Alexa Chung attends the BALMAIN x H&M Collection launch event at 23 Wall Street on Tuesday, Oct. 20, 2015, in New York. (credit:Andy Kropa/Invision/AP)

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Alexa Chung (credit:Andy Kropa/Invision/AP)

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Eve Hewson (credit:Andy Kropa/Invision/AP)

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Rosie Huntington-Whiteley (credit:Andy Kropa/Invision/AP)

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Olivier Rousteing, Kendall Jenner and Gigi Hadid (credit:Andy Kropa/Invision/AP)

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Ne-Yo (credit:Andy Kropa/Invision/AP)

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Laura Love (credit:Andy Kropa/Invision/AP)

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Harley Viera-Newto (credit:Andy Kropa/Invision/AP)

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Lewis Hamilton (credit:Andy Kropa/Invision/AP)

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Alek Wek (credit:Andy Kropa/Invision/AP)

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Sara Sampaio (credit:Andy Kropa/Invision/AP)

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Leigh Lezark (credit:Andy Kropa/Invision/AP)

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Jessica Hart (credit:Andy Kropa/Invision/AP)

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Jonathan Cheban (credit:Andy Kropa/Invision/AP)

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June Ambrose (credit:Andy Kropa/Invision/AP)

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Julia Restoin-Roitfeld (credit:Andy Kropa/Invision/AP)

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Zachary Quinto (credit:Andy Kropa/Invision/AP)

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Coco Rocha (credit:Andy Kropa/Invision/AP)

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Kendall Jenner and Gigi Hadid (credit:Andy Kropa/Invision/AP)

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A. J. McLean, Howie Dorough, Kevin Richardson, Brian Littrell, and Nick Carter of the Backstreet Boys pose with Creative Director for Balmain Olivier Rousteing (credit:Nicholas Hunt via Getty Images)

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Ellie Goulding and Dougie Poynter (credit:Nicholas Hunt via Getty Images)

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Soo Joo Park (credit:Nicholas Hunt via Getty Images)

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):

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.

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

SEE ALSO:
Get The Karlie Kloss Look With Step-By-Step Contour Makeup Tutorial
See The Whole Balmain X H&M Lookbook Here
Fashion From 90s TV and Films You Can Totally Still Wear Today

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:

Balmain X H&M Collection Launch Catwalk

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Gigi Hadid and Kendall Jenner walk the runway during the Balmain X H&M Collection launch at 23 Wall Street in New York City, NY, USA, on October 20, 2015. (credit:Van Tine Dennis/ABACA USA)

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(credit:Andy Kropa/Invision/AP)

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Gigi Hadid (credit:Van Tine Dennis/ABACA USA)

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Kendall Jenner (credit:Andy Kropa/Invision/AP)

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Kendall Jenner (credit:Andy Kropa/Invision/AP)

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Bella Hadid (credit:Randy Brooke via Getty Images)

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Kendall Jenner (credit:Andy Kropa/Invision/AP)

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Maria Borges (credit:Randy Brooke via Getty Images)

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Alessandra Ambrosio (credit:Van Tine Dennis/ABACA USA)

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Karlie Kloss (credit:Van Tine Dennis/ABACA USA)

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Balmain creative director Olivier Rousteing (credit:Van Tine Dennis/ABACA USA)

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Joan Smalls (credit:Van Tine Dennis/ABACA USA)

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Joan Smalls (credit:Van Tine Dennis/ABACA USA)

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(credit:Van Tine Dennis/ABACA USA)

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Gigi Hadid (credit:Van Tine Dennis/ABACA USA)

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Alessandra Ambrosio (credit:Van Tine Dennis/ABACA USA)

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JiHye Park (credit:Randy Brooke via Getty Images)

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Katrin Thormann (credit:Randy Brooke via Getty Images)

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(credit:Randy Brooke via Getty Images)

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Daria Strokous (credit:Randy Brooke via Getty Images)

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Daria Strokous (credit:Randy Brooke via Getty Images)

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Toni Garrn (credit:Randy Brooke via Getty Images)

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Toni Garrn (credit:Randy Brooke via Getty Images)

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Ronald Epps (credit:Randy Brooke via Getty Images)

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Karlie Kloss (credit:Randy Brooke via Getty Images)

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Constance Jablonski (credit:Randy Brooke via Getty Images)

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Jordan Barrett (credit:Randy Brooke via Getty Images)

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Dudley O'Shaughnessy (credit:Randy Brooke via Getty Images)

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Grace Mahary (credit:Randy Brooke via Getty Images)

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Nadja Bender (credit:Randy Brooke via Getty Images)

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Nadja Bender (credit:Randy Brooke via Getty Images)

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Ronald Epps (credit:Randy Brooke via Getty Images)

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Kati Nescher (credit:Randy Brooke via Getty Images)

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Jordan Barrett (credit:Randy Brooke via Getty Images)

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Constance Jablonski (credit:Randy Brooke via Getty Images)

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Lineisy Montero (credit:Randy Brooke via Getty Images)

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Lineisy Montero (credit:Randy Brooke via Getty Images)

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Ysaunny Brito (credit:Randy Brooke via Getty Images)

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Daphne Groeneveld (credit:Randy Brooke via Getty Images)

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Grace Mahary (credit:Randy Brooke via Getty Images)

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Grace Mahary (credit:Randy Brooke via Getty Images)

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Devon Windsor (credit:Randy Brooke via Getty Images)

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Ophelie Guillermand (credit:Randy Brooke via Getty Images)

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Dudley O'Shaughnessy (credit:Randy Brooke via Getty Images)

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Vanessa Moody (credit:Randy Brooke via Getty Images)

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Maria Borges (credit:Randy Brooke via Getty Images)

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Hye Seung Lee (credit:Randy Brooke via Getty Images)

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Alessandra Ambrosio (credit:Randy Brooke via Getty Images)

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(credit:Randy Brooke via Getty Images)

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Hye Seung Lee (credit:Randy Brooke via Getty Images)

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Katrin Thormann (credit:Randy Brooke via Getty Images)

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Jourdan Dunn (credit:Randy Brooke via Getty Images)

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Joan Smalls (credit:Randy Brooke via Getty Images)

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Joan Smalls (credit:Randy Brooke via Getty Images)

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Jourdan Dunn (credit:Randy Brooke via Getty Images)

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Kendall Jenner (credit:Randy Brooke via Getty Images)

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Kendall Jenner (credit:Randy Brooke via Getty Images)

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The Backstreet Boys (credit:Nicholas Hunt via Getty Images)

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(credit:Larry Busacca via Getty Images)

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