The band's Dirty Pop-Up runs from April 28 to May 1 in Los Angeles, and only ET got a sneak peek inside with JC Chasez on Friday morning!
The former boy bander showed ET's Lauren Zima all around the *NSYNC-themed spot, complete with special merchandise and photo activations to celebrate 20 years of *NSYNC.
"Some of us keep more than others. Joey [Fatone] happens to be a pack rat," he explained of where the museum full of items came from. "Some of this stuff is just all fresh, never seen before."
The pop-up shop includes several of the band's iconic looks -- some more questionable than others. "I'm proud of them all!" he jokingly confessed, revealing he has no fashion regrets from his *NSYNC era. "Rhinestones, studs. Man, multi-colored hair, chin-striped beards, I ain't scared!"
For Monday's Hollywood Walk of Fame ceremony, however, Chasez said they "agreed on dressy casual." The event will mark the first time he, Fatone, Justin Timerblake, Chris Kirkpatrick and Lance Bass have all been together since Chasez's 40th birthday party in 2016 -- and while he admitted they all text constantly, he said fans shouldn't get their hopes up for a musical reunion.
"For me, [Mickey] Mouse Club was high school, *NSYNC was college and now I'm living life!" he explained. "I think everybody goes through those different phases, and that's also what can make us relatable to a lot of people. We're just doing it like everybody else."
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"For the record, when we found out about the star, we hadn't been creating new products or anything like that. But when we thought about it... we decided, 'We're going to do some fresh stuff for them,'" Chasez recalled. "Over the next few years, we'll give them a few more things. But, literally, we are now making new stuff everyday."
"We'll still give them a little bit here and little bit there, but there aren't any plans for music," he shared. "There are no talks about a reunion tour now. You get cool merch for now, and then the future is what it is."
Bass spoke more about the pop-up and what fans can expect from *NSYNC's Walk of Fame ceremony while chatting with ET last week. Watch below.
The Dirty Pop-Up Experience, from *NSYNC in collaboration with Epic Rights, runs from April 28 to May 1 at Hollywood & Highland Center in Hollywood. For more information, visit www.NSYNC.com.