Is cosmetic surgery allowed for a Muslim women to please her husband?

I am a Muslim woman and realise that I have a duty to my husband to please him and do what I need to do to keep us together. Lately however I feel the attraction between us has not been the way it used to be and I feel that he will start to look elsewhere. I know the flaws I have that are aesthetic and I want to know if changing them cosmetically through surgery for the sake of keeping my husband interested is haram. I have thought about many other options such as make up, but he hates it when I wear it so I'd rather do something that doesn't require me to wear it. I am sure if I undergo the change he will be more visually pleased.