Buy It Now at Brooklyn Fox, $178 

"It really depends on the occasion. For example for Valentine's Day or for an anniversary, you really can get more risque, but for a birthday or Christmas, be more conservative. But there are ways of getting your way—having your cake and eating it too. For example, if you really want to get scandalous and do the whole crotchless number, then just bump up the price point so that at least you're getting a quality piece that's really for her too and doesn't just feel like it's something from Times Square. That way, she feels, 'Oh, he bought me something that's silk and lace,' versus polyester or spandex. It's really all in the delivery. There also has to be communication between partners. If you don't know your partner well enough, then that's a different issue."