Britney Spears Exposes Her Bare Bottom While Hanging Out With Her Children (Photo)

Britney Spears sat on the grass and watched sons Jayden, 6, and Sean, 7, play soccer Sunday in Los Angeles.
Just another soccer mom, right?
Except for the fact that the pop star changed into a short white dress and appeared to have nothing under it.
And as she got up to leave, she kept pressing down the backside of the dress, but in one photo the breeze got the best of her, revealing her bare bottom.