Why is she so humble about her ass? And how?

[WillR 366]

These are unedited paparazzi pics, and they aren’t staged either (*cough* kardashians). She clearly has possibly the best ass in the world, how is she so humble about it? If anyone else had an ass half as good as Britney’s, they would be posting pictures of it every day, but Britney doesn’t even seem to care! And the gp don’t even know about her ass! It’s just so crazy...