Watch Backstreet Boys' Unexpected Performance of "I Want It That Way"

Backstreet Boys have been on tour this year, but as far as we were concerned, one of the stops wasn't the Balmain x H&M fashion show in New York. Well, surprise! The band showed up at the end of the show on Tuesday to show off some of their old moves. They started with "Everybody (Backstreet's Back)" and even did a rendition of "I Want It That Way." There are tons of pictures, plus a video of It girls Kendall Jenner and Gigi Hadid dancing along to the songs. So what if we're jealous! Nick Carter also brought Backstreet back (so to speak) on an episode of Dancing With the Stars a couple weeks ago. Basically, these guys love Backstreet Boys as much as you do. Check it out!