Nipple covers, breast petals, pasties—no matter what women call them, they're an essential part of your outfit if you've got a tricky neckline to work with and a traditional bra is not an option. (Backless, strapless, plunging, cutout, sheer…. We've seen it all in our formal dresses and cocktail dresses, and we absolutely have a solution for that.) Looking for a little more coverage? Try a stick-on or adhesive bra that offers some support and acts as a push-up bra if you're looking to enhance your cleavage. You can also get that affect with a bra insert that works with a traditional bra you may already own.