A decade ago, MTV played host to a slew of celebrities hanging out in Times Square to ring in the New Year. Although everyone was there to party, the big question was: Is the world going to end tonight? The Y2K bug* was plaguing the world. Would we make it to the millennium? (Spoiler alert: We did! We made it!)

Up until those final seconds of panic, Diddy performed, as did Jay-Z and Bush (which is funny because Gwen Stefani and No Doubt were also on hand to perform), Nick Lachey and Jessica Simpson cuddled and Christina Aguilera chatted with Carson Daly.

As the final countdown took place, the clock struck midnight, confetti fell and the world (obviously) didn't end. But just in case, No Doubt was on hand to ring in the New Year with the classic R.E.M. tune, "It's the End of the World as We Know It (And I Feel Fine)." How ironic! They then segued into their own tune, "Ex-Girlfriend." The fact that the world didn't end doesn't leave us very much surprised, but you may be surprised to know that in 1999, Gwen Stefani had pink hair, blunt bangs and braces. We wonder what look she'll use to ring in 2010 with?

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*For those of you who may not be familiar with the problem, yourdictionary.com defines it as: "The predicted malfunction of some computer systems prior to or at the beginning of the year 2000 because of their inability to distinguish between dates in the 1900s and dates in the 2000s. This inability results from the coding of year dates in some software and chips with only the final two, rather than all four, digits." Anyways, it doesn't matter because it didn't happen, but that's what we were worried about ten years ago.