If you are already wearing lingerie, then pick out something a little naughtier or sexier than you normally wear.
If you like your retro lingerie a little naughtier than the originals, you'll love the selection here.
If you're looking for something a little naughtier than what Victoria's Secret has to offer, you may get an eyeful of exactly what you'd love to wear or at least admire at Frederick's of Hollywood.
In general, lighter colors and styles that lace up with ribbon are most romantic, while hook-and-eye closure and darker colors or jewel tones are on the naughtier side.
Intimate Wholesalers has that same style, but they also have a naughtier version, the Black Lace Cupless Bustier with Matching G-string.
Much of the selection is similar, but Frederick's sometimes takes lingerie to a slightly naughtier place than Victoria's Secret does.
Remember, you can always give them a romantic poem, and then say "I was thinking of making it much naughtier, but I wasn't sure if you'd appreciate that."
Trashy is debatably naughtier than Frederick's of Hollywood but just as fun.
You can find them almost anywhere lingerie is sold, but if you want something a little fancier or naughtier, you may want to take your search either online or to specialty lingerie shops.