It seems like just yesterday that the then 18-year-old Britney Spears burst onto the music scene wearing a sexy schoolgirl costume in her Baby One More Time video.

Since that time the pop singer has gone from red leather jumpsuit in Oops I Did It Again to a Ring Master Costume in her 7^th concert tour the circus.

Although she has worn many a sexy outfit over the years Britney maintains that she prefers the casual look, and is quoted as saying ‘I love my jeans and my sweats - I’m really just a tomboy at heart. So it’s really hard for me to be like Kim Kardashian and be makeup- and hair-ready every time I go out of my house.

‘I’m not a believer in that, you know? On the other hand, when you do wear those sweats, you’re like, "Oh God, I should step it up a notch".’

For all the costumes over the years the one that everyone will remember most is likely to be the Slave to you outfit from the 2001 MTV VMAs awards, it raised eyebrow and was one of the most popular Sexy Halloween Costumes in 2002.