Her original demographic was teenyboppers and she first presented herself to the public as a wholesome, homebred teen.
Then she tried to tap the 20something market by becoming more explicitly sexual and edgier, with less of a pop sound and more of an urban sound to her recordings.
Then she married that clod and had two kids and was perceived as mom and a recluse - not very hip.
So now her publicity people have apparently sent her out into the wide world to show off her privates in order to dispel her mommy image and reestablish a vixen one.
Oh, well, that clears up everyone's concerns. There is a REASON. That makes it OK. Got that one.