The boy band, which made legions of tweens swoon in the early '90s, selling more than 50 million albums, became a worldwide phenomenon before calling it quits in 1994.

Eighteen years later, they're still "Hangin' Tough." The oldest "Kid," Jonathan Knight, now a real estate developer, will turn 40 later this year. Since the band's demise, former members Donnie Wahlberg, 38, and Joey McIntyre, 35, have seen acting success, while Danny Wood, 38, has worked as a music producer and Knight's brother, Jordan, 37, has continued to record.