Fifteen years ago today, Britney Spears released '...Baby One More Time.'. In honor of Brit's 15 years of work, let's take a look back at some of her more intriguing videos -- including her Instagram teaser of 'Work Work' from this weekend.

Britney came onto the scene in her school girl uniform with braided pigtails and a pretty pout with '...Baby One More Time,' but it wasn't long before she had moved to outer space.

With Britney's 'Oops, I did it again' video she showed us what it looked like to travel into outer space in a skin-tight leather suit.

A few years later, she took us to a club full of synchronized dancers and showed us she was all grown up with 'I'm a Slave 4 U.'

Her VMA performance of 'I'm a Slave 4 U' featured a live snake, so to out do herself in Toxic she took on multiple personalities and wore a suit which appears to be made only of jewels.

She's even been the ring leader of a circus.

Now Britney is taking her act to desert in this teaser video for latest single, 'Work, Work'.

What do you think, which is your favorite Britney video?