Ryan sure has come a long way from being the chubby kid with the grandma glasses. It's safe to say that the style on the left is something you'll never see the guy on right sporting ever again.
Was Lil Jon in the high school band? Was the tux just for a yearbook picture? Regardless this goofy looking guy managed to outgrow this phase and become one of the most prolific rappers of the young 21st century.
Looking at Jennifer Lopez, it's hard to believe there was a time when she wasn't as attractive as she is today, yet here's the proof to convince you otherwise. There's no question that J. Lo is happy about where she is in life now.
Efron is one of the hottest guys in Hollywood today, but his earlier days consisted of a sillier look. As he transitioned from being a teen Disney star to an adult actor, Efron cleaned up his look and revealed a more studly side.
Considered one of the most attractive stars today, Theron's well-kept appearance wasn't always so. Since her teenage years, she seems to have picked up a tip or two about what to do with her hair, much to her advantage.
Some times it's nice to know that no one is perfect all the time. Although for the last thirty or so years of his life he may have seemed immaculate, there was a time when he was not, um, good-looking. Between the glasses and the bowl cut, George is just another example of good things getting better and better with time.
It's hard to see someone as stunning as Megan Fox fall under this category, but the last few years have made clear that she was able to overcome her messed up teeth and denim vest to become one of the most beautiful people in Hollywood.
Anyone who has listened to Eminem's music knows that he's a pretty angry guy. This picture of him with a mullet explains a large part of that anger. Maybe if young Marshall had known a good barber, he might not have been driven the make some of the powerful songs he has.
On the show Parks and Recreation, Jones's character Ann Perkins is always receiving compliments from Leslie Knope about how beautiful she is, but somewhere inside of the beautiful Jones is a dorky girl. It's comforting to know that even Rashida Jones has pictures she's probably embarrassed about.
Between the drab looking girl on the left and the beautiful woman on the right came one of the most famous angsty stages of the last 20 years. Lavigne, however, has gone on record as saying there was a time and a place for each look she had, so maybe her first look had one too.
Like his Ocean's Eleven buddy George Clooney, young Pitt's bowl cut wasn't doing him any favors. Somewhere along the way, though, he learned to let his incredible hair flow (and then cut it, and then let it flow again, and so on and so forth), and blossomed into one of the sexiest men in Hollywood.
Growing up only did Taylor favors. Well, that and a good stylist. Looking at the younger T-Swift, it's easy to imagine a path that could have ended with seven kids in a trailer park. Luckily for Taylor, her knack for making a catchy tune took her on to bigger and brighter things.
Woah, that's Neville Longbottom today? When the Harry Potter movies started coming out, no one could have predicted that this inept goofball of a wizard would ever be anything but. Looking at Lewis now, however, makes us muggles wonder what sort of spell he cast on himself.
Sometime people just need to figure out how to work with what they have. In Beyonce's case, she was given a whole lot to work with. She may not have been the weirdest looking kid, but looking the way she does now would be an improvement for pretty much anyone.