How could you not love Shia who was a total nerdy kid on the mouse house channel's Even Stevens? He did weird things when he was growing up, but he looks mighty fine and shredded.
Before we were amazed by DiCaprio's performance in Titanic, he had a period in Growing Pains and The New Lassie. He had the magic to do things beautiful. Though he is dad bod, girls still love him!
J. Tim might seem a little quirky on Mickey Mouse Club. But we all have been through the awkward moments. So, don't judge. Now what we got is a smooth "Suit & Tie" singer.
Along with J. Tim from mouse house, Ryan Gosling also turned out to be a hunk. Years treated Ryan well, so well
There is no doubt that JGL got talent, but it takes for him to be a hunk as he is. He was supposed to be a heartthrob based on 3rd Rock From The Sun and Brick.
NEIL PATRICK HARRIS
NPH blew our mind first as a whiz-kid doctor in Doogie Howser. Now he becomes the sarcastic yet steamy Barney on the now-finished How I Met Your Mother.
Oh my Godness! Elijah was such a cutie at ten years old, acting in Radio Flyer and The Adventures of Huck Finn. He grew up to be one of the greatest stars in the FX show Wilfred.
Neville Longbottom' has just got HOT.
Nicholas Hoult played Marcus in About A Boy opposite ladies' man Hugh Grant when he was 11-year-old. A few years later, he morphed into a sexy, troublemaking high school student in the U.K. series Skins.
Lipnicki grew up pretty normal as a 23-year-old mixed martial arts fighter with an eight-pack stomach. He recently filmed You Used To Be Cute about misconceptions of child stars.
This cutie is still acting and looks so good.
Zac Efron is always hot. OK, he was cute in High School Musical...He's got some gorgeous abs and pecs to go with now.
BRIAN AUSTIN GREEN
Though Green didn't hold a title of Hollywood hottie in Beverly Hills 90210. His David Silver role gradually became the amazing man to achieve full Tori Spelling love-interest status before you could say Donna Martin graduates. The rest is history!
Josh Peck had been the goofy sidekick comparing to Drake Bell's better looks.We saw Josh's getting fit and well near the end of the series. Now he has become a successful voice-over actor and a hotties in 2012's Red Dawn!
This is our final hottie and it may come as a surprise that Patrick Dempsey, known to us know as McSteamy, has evolved into an ultimate heartthrob, wooing us on TV on Grey's Anatomy and in films like Enchanted.