The who’s who of the fashion world came out on Tuesday for the highly-anticipated collaboration between luxury brand Balmain and affordable fast-fashion label H&M.

The hottest young supermodels strutted their stuff on the runway wearing all manner of leather jackets, sequined tops, and studded pants that avid partygoers will adore.

What up #HMBALMAINATION? ✨ @missjourdandunn @KendallJenner @ORousteing @GiGiHadid @8Dudley @Balmian #HM pic.twitter.com/dSbEshA1kA

— H&M (@hm) October 21, 2015

Held at New York’s financial district, the star-studded event featured supermodel gal pals Gigi Hadid and Kendall Jenner, as well as Jourdan Dunn, Karlie Kloss, and Joan Smalls. Several Hollywood celebrities were also in attendance at the fashion show to see the much-talked about collection. German actress Diane Kruger was seen in a nearby bar wearing a black velvet Balmain for H&M jumpsuit.

H&M Balmain Red Carpet Peek. #hmbalmaination @GettyImages #dianekruger pic.twitter.com/0xiWSPva2v — Larry Busacca (@lbusacca) October 20, 2015

“To me, it’s club outfits. The kind men can get on board with. Straight men,” Kruger said of the collection.

Kendall’s equally famous younger sister Kylie was also seen having fun with the models. She wore an intricately embellished long-sleeved top from the same collection, which she paired with black thigh-high boots.

However, it wasn’t just the glamorous supermodels and high-end clothes that got everyone’s attention. Nineties pop heartthrobs the Backstreet Boys gave a surprise performance during the show and got Hadid and company dancing and singing along to their hits, “Everybody,” “I Want It That Way,” and “Larger Than Life.”

It is quite interesting to see these millennial supermodels eagerly jamming to Backstreet Boy songs as they were too young to have witnessed the peak of the ‘90s boy band craze.

Hadid was merely two years old when one of BSB’s first hit, “Everybody” was released. Kendall Jenner was just a year old, and her kid sister Kylie had not even been born yet.

Suffice to say, the event turned out to be a complete success judging by the photos posted on Balmain’s Instagram page. The Balmain for H&M collection is due to hit both store and online shelves on November 5^th.