Hanson

Hanson were a new breed of long-haired, high-pitched and incredibly young pop-rockers. Back in '97, when Justin Bieber and One Direction between the ages of 3 and 5 at the time, Hanson struck gold with their debut hit "MMMbop." Band members Isaac, Taylor and Zac Hanson were a mere 17, 14, and 12-years-old, respectively. But aside from having their first-ever single receive two Grammy nods and reach number one in 27 different countries, the free-spirited trio were best known for their identical shoulder-length hair that set them apart from the other boy bands at the pop music playground.