Apr 25, 2013 at 11:16am IST

Snapshot: 'The Backstreet Boys', how their looks changed over 16 years

In this photo from 1997, Beverly Hills, 'The Backstreet Boys' donate an outfit from their world tour to Planet Hollywood's world renown collection of memorabilia. In this Los Angeles, California April 22, 2013 image the Backstreet Boys (from L-R) Howie Dorough, Kevin Richardson, AJ McLean, Nick Carter and Brian Littrell touch their star after it was unveiled on the Walk of Fame.