Here are all the guys — plus Justin's see-through shirt.
This is one amazing boy-band blast from the past. JC Chasez turns 38 on Friday, but we're looking back to 1999, when the former boy bander was just 23 and busy touring with *NSYNC. That Spring, the group traveled across the country for the Ain't No Stoppin' Us Now tour, and during the LA leg, they were joined by a few fellow '90s stars. For a fun dose of nostalgia in honor of JC's birthday and the brand-new *NSYNC album, take a look at the best backstage snaps from *NSYNC's 1999 tour — plus a must-see interview with the group.
Source: Getty / SGranitz