Metallica guitarist Kirk Hammett geeks it up in 1975

A hilarious shot of Gerard Way from an early nineties school yearbook

The Boss himself Bruce Springsteen aged 13 in 1962.

Amazingly Madonna only six years younger than her rumoured 22-year-old boyfriend, Jesus Luz, in this photo from 1975

The Doggfather himself Snoop Dogg back when he was better known as Calvin Broadus Jr.

Katy Perry back in her teenage Christian singer days

Maroon 5 singer Adam Levine looking shady as a teenager

Ray Toro of My Chemical Romance, minus his mop of curly hair

Sean 'Diddy' Combs in his high school days

Metallica rock titan James Hetfield looked decidedly less scary as a teen in the seventies

John Mayer aged 16 in 1993

Former Fugees singer and loony Lauryn Hill in 1989. Stunning hair...

Mariah Carey as a teenager in the early 1980's. She's hardly changed.

Grammy Award winning R&B star Sisqo back when he was simply known as Mark Andrews

Good Charlotte's Benji Madden long before his hair fell out

Mikey Way of My Chemical Romance. Nice curtains!