Lose the extra pounds and you'll feel much better about yourself. Kudos for the courage to post your pic for open criticism. Get yourself P90X for Xmas or whatever. In 90 days you'll be a new toned you. It works. Just do a Youtube search on before and after pics.
Looks good. My rule of thumb is that the bigger the body the bigger the breasts should be. It adds to the full figured image of a woman. If that body had A or B cups it wouldn't look as attractive. However, if you're a petite frame then A and B cups can look very attractive because it compliments your figure.