You can't make her love it but you could be direct with her on what you like to see a woman in.. Sometimes a man needs to be firm. Why suffer silently inside when it's your wife you want to see sexy? One of the many reasons why men have affairs. They try to maintain a clean loyal husband outlook that deep inside they yearn for something else.
We are not shy to tell another woman what we want but with our wives we are. Stop protecting your ego. Your wife has to deal with it. Aren't you sick and tired of women calling us unfaithful, irresponsible and what not? In the process of not hurting them while maintaining our status quo, we have accumulated too much of bad images of how men are. So tell them. Let them deal with it