48. A thong with the right amount of support

Air Invisible High Rise Thong, available at Tommy John, $28

I recently went wedding dress shopping, and I wore the nude pair of these undies for the occasion. They're ultra-thin, super lightweight, and you can't see any lines because the waistline is seamless. They're also high-waisted, so they're perfect under pencil skirts, tighter dresses, or thin pants. Honestly, Tommy John's underwear just can't be beat. —Sally Kaplan, editor