It seems that looking good is a requisite for celebrities. And most of them do fulfil it, at least today. But when they were young, many of them weren't what you'd call attractive. We doubt anybody would turn their heads if they'd seen them passing by. Lets take a look, you'll be amazed at how much people can change in just a few years!
Jennifer Lopez is widely regarded as one of the most beautiful women alive, but ... did you know that she wasn't always like that? As a child, she wasn't really a looker. It's only through the years that she grew up to look like she does now. She got rid of those pigtails, and now has a team of the best aesthetic professionals in Hollywood to spruce her up whenever she needs it.
As a teen, Penelope Cruz looked like a crooked reflection of what she looks like now: not that different, but clearly not her best angle. We think that she's aged all for the better, don't you agree?
Eva Longoria called it before the media got a hold of her childhood pictures. In an effort to combat bullying, this famous "Desperate Housewife" came out saying: "All my sisters were light blondes with hazel eyes. They used to call me ugly duckling." We are all the luckier for her struggling against that stereotype. She's looking better than ever!
Who knew that behind those big, thick-rimmed glasses, hid the beauty that would grow up to be Charlize Theron? As shy and dorky as she might have looked, there's no denying that she already possessed the features we've all learnt to love.
Catherine Zeta Jones
This bucktoothed and small-eyed young girl was still years away from becoming the bright Hollywood star she'd grow up to be. Catherine Zeta Jones did get her teeth fixed, and has turned into one of the most recognisable faces in show business.
No matter how many other shows and films she stars in, Jennifer Aniston will always be remembered as Rachel, the character she played in "Friends". And of course as Brad Pitt's former wife. As a teenager, however, nobody would have predicted any of that. She had a roundish face (and figure), and somewhat darker hair. Years have passed for the better, turning her into the beauty we all know and love.
Cindy Crawford, the most famous model around the world, has a place in this list too. She was a sweet teen, but her looks were no more than average. And she's barely recognisable in this picture, the only feature that suggests it might be her is the mole close to her mouth.
Looking at a picture of the teenage Scarlett Johansson, we notice that ... she does not even look like the same person! Her nose is noticeably thinner, and she obviously got some work done on her teeth. She was definitely not as gracious then as she is now.
For a person who completely changes her looks every few years, it's no surprise that a picture of the young Madonna does not look anything like she does today. And nobody would have guessed that this innocent, split-toothed young girl would grow up to be the Queen of Pop.
The woman now hailed as the sexiest in the world, Angelina Jolie, couldn't have guessed herself that anybody would bestow that title upon her. Even if she already had the meaty lips that couldn't be on anybody else's face, there's something about their balance with her eyes that didn't really work until she was well into her twenties. Would she have won Brad Pitt over with this look right here?
Britain's Kate Winslet didn't always posses the traits she would become famous for. The star, who jumped to worldwide fame after starring in "Titanic", where she had a brief but very revealing nude scene, didn't always posses the glamour she does now.
Who would have thought that this braided young girl would grow up to be none other than Beyoncé? Still years away from stardom, this picture shows that the years have been good on her.
With that black mane, thick eyebrows and general chubbiness, this teenager would grow up to be Shakira, and later acquire worldwide success with her music. Time has certainly been kind with this Colombian singer-songwriter who grows more beautiful by the day.
Sarah Jessica Parker
Today, she's a fashion icon, and she'll always be remembered for her starring role in the hit series "Sex and the City". But she was not always the diva she is today. When we see the young Sarah Jessica in this picture, we have a clear example of an ugly duckling who turned out to be so much more.
The young actress who starred in teen TV programmes and films such as "Gossip Girl" clearly benefited from time's passing. She didn't have the prettiest smile, but that was nothing a good dental surgeon and a few thousand dollars couldn't take care of. According to Ask Men, Blake Lively is the most desired woman in the world.
The girl with the broad smile and friendly eyes is still far from the sexy pop singer that would travel around the world teasing everybody with hits like "Oops, I did it again" and "Slave 4 U". She did well for a time, but we're not really sure that it was all for the best in the end. What do you think?
Although she's an unquestionable natural beauty, Renée Zellweger didn't really know what to do about her looks until the early 90s, apparently. During that time, she certainly looked more like a real-life Bridget Jones, than the world-famous film star she grew up to be.
This sexy Mexican actress looks, without a single doubt, much prettier today than she did as a teenager. And we cannot really blame her, those bushy eyebrows really drew your attention away from her beautiful features.
Believe it or not, this is the same Paula Abdul that would, years later, be the judge in the reality show "American Idol." Her looks did pick up with the years and after a tour through Hollywood's most expensive beauty clinics.
Did you know that Avril Lavigne looked a lot like a nerd when she was a teen? That was just a matter of styling, nothing a multi-million dollar contract with a record company and the professional touch of a stylist couldn't fix.