When you look at Green Day frontman Billie Joe Armstrong these days, 'cute' might not be the first adjective that comes to mind.

However, when you see the blonde mop-topped boss that he was at 5, you might change your mind.

Armstrong posted a picture of himself in the studio - yes, he began his recording career at 5 - with his first singing teacher, Mrs. Fiataroni. As he explained, it was the same studio that Green Day would go on to record 'Dookie' in 16 years later.

He's got the rock star attitude down, anyway.

See below for the pic: