Comparing the before and after pictures, I think his Wife is into Silicone Supplements.
You'd say otherwise about her appearance if she hadn't, considering that she's survived breast cancer and probably had major surgery to come through it. If she went like plenty of women, there would be continual remarks of her "letting herself go" and "she obviously doesn't care about her appearance" and other such rubbish when there is no value placed on her as a person, only her attributes. THere's plenty of stories whose husbands who can't cope with a woman losing one or both breasts to cancer and it destroys their marriage because he refuses to see her as a woman any longer, as if her breasts are the only reason he stays married to her.
I say good for her for it if that is what helps her and her personal self-image, much less her marriage (which seems healthy still.)