// DAILY FIRST //
By JACKIE WILLIS
January 31, 2014
Justin Timberlake had teens swooning as the cute, curly-haired blonde guy in 'N Sync, and went on to campaign to bring sexy back with a solo career and later make apple martinis cool again in The Social Network. Now, even without 20/20 vision (get it?), it's obvious that Mr. JT -- who turns 34 on Jan. 31, 2015 -- has still got it!
This 20/20 Experience singer isn't the only one! Take a look at the heartthrobs that are only getting better with age.