LOL! Is that what she is moving?
In that dance move she is shaking her shoulders and her hips, a.k.a she is shaking her entire body, GASP! It's a basic dance move that is as common as dirt.
It is the camera shot, the one that YOU posted, that zeroes in on her chest.
Would you suggest that women not shake when they dance?
Or would it be more reasonable for camera shots to not zoom in on a females chest and for posters not to post the camera shots that do?
LOL...
Ok, if you say so...LOL.