A soft bra is usually best, as underwired bras can cause restriction and cut in as you grow. There are design features in maternity bras that help keep your breasts in good shape:

- Soft breathable materials that expand with you and don't cut into the skin.

- An integrated support system

- Wider straps to ease the strain on shoulders and neck

If you're used to underwired bras, you'll be pleased to hear that there are underwired bras designed for wear during pregnancy and breastfeeding - they're designed specially for your changing shape, with soft wires. Don't forget that these are not interchangeable with normal underwired bras.

Most bras are now designed with nursing clips, so that you can use them after the baby is born too; but because your breasts continue to change shape, you'll probably find you need at least one new bra (see nursing bras).