Strapless bras are pretty much a lingerie necessity and some outfits are even more demanding. For clothing that is not only strapless, low-back or low-cut but is also made of a knit or other figure-hugging material, you'll want the seamless polish of a tee-shirt bra as well. These styles have seamless cups and smooth sides, so they're virtually invisible under clothing. And, like most strapless bras, the cups are contoured or molded for shaping. Many brands offer styles with removable convertible straps that make this a most versatile piece. Whether you need a shaping longline, a daring plunge bra, full-coverage cups or a little extra padding or lift, there are styles to suit everything in your wardrobe.