If you don't think NSYNC was the best boy band of the '90s, we're just gonna have to say Bye, Bye, Bye!

Justin Timberlake, JC Chasez, Joey Fatone, Lance Bass, and Chris Kirkpatrick totally ruled the world back in the day, and it's safe to say a lot has changed over the years. From JT's ramen noodle hair to Chris' famous braids, these throwback pics are making us cringe in the best possible way.

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JC's 40th… And, if you don't know now you know…

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Even though these guys have been broken up for over a decade now, it's clear they're still BFFs. Most recently, the Internet totally lost it when Justin posted a reunion pic of the gang at JC's 40th birthday bash.

Now, we just gotta ask: when's the reunion tour happening?!?

Scroll through the gallery below to compare what the NSYNC boys looked like then and now!