Pregnancy brings changes to your breasts, including a weight increase of as much as 18 ounces so it's important to support that extra weight without strain. A maternity bra is constructed to stretch enough to accommodate changes in breast size and to support heavier breasts. Typically there are 3 or more closure settings, allowing you to start on the tightest setting and move to the loosest as you grow. While maternity bras come in a variety of styles, many women find they are most comfortable in soft-cup styles.
Even without the added support of an underwire, these bras have support features like side slings or inner bands to protect and support heavier breasts. Leotard or U-shaped back design relieve back pain, and wider straps ease the additional strain on shoulders and neck. Maternity bras usually have full cup coverage for additional comfort and support. It's important that all of the breast tissue is contained and that the band fits under the breasts, flat against the ribcage. Soft cup maternity bras come in a variety of styles and fabrics. If you find it hard to stay cool, try a naturally breathable cotton bra or one that wicks moisture away.