Half-cup bras cover only half of the bust and are usually shaped like balconette bras – the term ’half-cup’ thus refers more to the coverage of the bra and not its actual shape. Half-cup bras usually feature vertical cup seams which lift the bust high up on the décolletage. People with a full bust can wear a half-cup bra style, but softer breast tissue may not be the best match with this style.