Heidi Klum has given fans an insight into how she made it as one of the world’s most successful supermodels.

The model - who turns 39 next month - posted a video on Facebook which shows her as a sweet 18-year-old in her native Germany, and RadarOnline.com has photos of the teenage wannabee.

PHOTOS: Teenage Heidi Klum As An Aspiring Model

Whoa! That's some flashback!

A vintage photo has surfaced of The View's resident conservative cutie Elisabeth Hasselbeck, before she blossomed into one of TV's most beautiful butterflies.

The Riverside, Rhode Island native --  then named Elisabeth Filarski -- looked much, much different in the old days, as she sported huge glasses and thick braces in the pic that was taken when she was a student.

Supermodel Heidi Klum wasn’t always the blonde beauty we’ve come to know and love.

The mother of four tweeted a pic of herself and you might not believe it’s her!

In the photo, Heidi, who was just 19 at the time, looks so different as a brunette! She’s wearing a prom dress with lavish jewels lying on a bed surrounded by stuffed animals.

Even Hollywood's hottest A-list stars started out tiny, so RadarOnline.com has put together a gallery of some of the sexiest in the business before they were famous and were just little kids.

Jennifer Aniston is still one of Tinseltown's most eligible bachelorettes, even though she's dating her Wanderlust co-star Justin Theroux, the two haven't tied the knot yet, and check out her big her baby blues in the toddler photo we got!

Long before she was traveling the world promoting the record-breaking blockbuster The Hunger Games, Elizabeth Banks was a fresh faced high school girl who went by the name Elizabeth Mitchell.

The actress attended the Pittsfield High School in Western Massachusetts and RadarOnline.com has photos of her drastically different, pre-Hollywood look.

Do you know what your favorite female musicians looked like in their youth?

These sexy stars steam up the stage in the sexiest outfits imaginable, making it hard to believe that they were once, innocent and adorable babies, kids and teenagers. From the most powerful pop stars to the hardest rocking singers, RadarOnline.com has photos of 10 sexy singers before they were famous.

Hollywood stars are just like us – they get older and their faces change!

From big screen bombshells to the hottest blockbuster hunks, RadarOnline.com has early photos of all your favorite movie stars in their younger years, looking dramatically different and often times unrecognizable.

Guess who!

Long before Courtney Stodden was known as the teen bride who married 51-year-old actor Doug Hutchison she was just a regular school girl, and RadarOnline.com has the photo to prove it.

Courtney, 17, has been slammed with accusations that she’s had cosmetic surgery -- including a boob job -- but she has adamantly denied having anything done, and her mother Krista Stodden has come to her defense saying her daughter has "real breasts, real lips, she is not plastic."

In the photo passed on by our friends at Crazy Days and Nights, Courtney appears way more modest, more covered up, and more natural than she is in recent photographs at the pumpkin patch, where her sexy attire and PDA got her and Doug kicked out.

Mark Ballas continues to strut his stuff on season 12 of Dancing with the Stars, but before Chelsea Kane was on his side, one of his first dancing partners was another blonde -- a young Julianne Hough!

EXCLUSIVE PHOTOS: Mark Ballas -- Before He Was Famous

Before Mark found his calling on the ballroom floor, he had his first professional photo session as a tiny tot, and RadarOnline.com can exclusively bring you the photos!

When you see a famous rocker covered in tattoos tearing it up on stage, it's hard to believe they were once a cute little kid, and it's even more difficult to imagine when they're gracing the cover of Playgirl magazine!

EXCLUSIVE PHOTOS: Tattooed Rocker Phil Varone When He Was Ink Free And Innocent

But even the baddest of bad boy rockers started off sweet and innocent, and RadarOnline.com has obtained exclusive photos of ex-Skid Row drummer Phil Varone to prove the point.