A demi bra has contoured cups that expose the upper part of the breasts and is constructed with wide-set straps.They're sometimes known as balconettes or shelf bras. This style is an ideal option under low-cut tops or wide, square necklines. It works especially well for women with small or average-sized breasts. If your outfit is a knit or a body-hugging fabric, try a t-shirt demi bra for an invisible look. With smooth, seamless cups and often seamless sides, your bra won't show under silky or clingy fabrics. Many styles have padding or foam push-up cups for a youthful lift that enhances your cleavage. And, as a bonus they're sexy, too!