Your body goes through so many physical changes during a pregnancy that often by the time you enter the second trimester, you are ready for some maternity clothes that better fit your baby bump. Thank goodness that modern maternity fashion has come such a long way, allowing you to look stylish and feel comfortable all at the same time. Here are some staple pieces that you can mix and match, layer with pieces you already own like cardigans or sweaters, and some even use into the fourth trimester. Pick up a couple for yourself or add to your baby registry