With the increasing popularity of tee shirts and other modern knit fabrics, a smooth, almost invisible bra becomes a wardrobe necessity. These so-called t-shirt bras are seamless and contoured or lightly lined. Many are made of one piece of material with no cup or side seams at all.
T-shirt bras come in all styles, including front-closing, racerback, demi cups, plunge, and wire-free. What they will all have in common is cup fabric that is completely smooth under clothing. The contour t-shirt bra will have molded cups that are shaped with foam and that hold their shape even when off. These bras are a good choice for a smooth put-together silhouette with no see-through.