I do agree that the breast looks out of shape but another concern for me is how her leg, especially the left one look quite distorted and odd.
Another though, this is very subjective but the bunny ears are somewhat........ I'm not sure what word to used but it's kinda unsatisfactory. I think that the ears are not as cute as the face or her delicious petite body.
But, just like the tittle says, the bunny do looks cute and sexy and I personally like the combination of white and purple on a bunny character.