If the early 2000s had to be described in two words, they would have to be "so raven." They were the years when boy bands captured the hearts of choker-wearing tween girls, pop princesses ruled Hollywood with bared midriffs, and Disney Channel Original Movies were the peak of television greatness — so millennial costume ideas are ripe for the picking! Here are 31 of the greatest costumes inspired by the new millennium. If you can manage to choose a favorite from this fun-filled list, any 20-something who experienced life from 2000 to 2005 will love your nostalgic costume choice! So put down your Motorola Razr and check out these blasts from the past.