A quarter up bra offers much less material than a traditional bra, but is not as risqué as a cupless bra. The quarter cup look fully covers the nipple and areola, but it leaves the top portion of the breasts exposed.
This may be uncomfortable for women, in this case, the demi cup bra, which covers the nipples, may be preferable.
The quarter cup lifts the breasts and pushes them together, lending the support of a full cup bra, while creating more defined cleavage. This bra is more popularly referred to as a shelf bra or open cup bra.
You can wear a quarter cup bra at anytime however there are some certain times that are great for the quarter bra. These times would include when you are wearing an item such as a dress or top that has a low neckline.
A quarter cup bra is usually more difficult to find and is best found online or in a special store. I choose to go with online because you not only have a better selection of quarter cup bras but you can find a quarter cup bra at a better price.