The starlet just decided to release some snippets of her dancing in a bikini because she'd never released a video for her 2003 single Breathe on Me. Any excuse, really, but we doubt there'll be too many complaints from fans.
In the first of three videos, Britney captioned the below: "Girls just wanna have fun ;-) Never released a video for this song... so decided to do a little tease on Instagram instead… enjoy!!"
Indeed her hair is amazing.
In other "celebrities showcasing their hard earned abs", here's JLo posting a more blatant gym selfie.
