Members: Kevin Richardson, Brian Littrell, Nick Carter, Howie Dorough, A.J. McLean
Then: BSB is the best-selling boy band of all time. In 2006, founding member Kevin left the band to start a family.
Now: BSB went on tour with NKOTB, and Kevin (now married with a son) even joined the guys for a few songs during their show in L.A. Brian married and started a family with a model from BSB's "As Long As You Love Me" video. Howie, too, is married with a son. A.J., who has been in and out of rehab over the years, married Rochelle DeAnna Karidis in December 2011, and will welcome his first child in 2012. Nick battled with drugs and alcohol for a decade and was diagnosed with cardiomyopathy in 2009, but is now stable.