We may be able to find a plus size wedding dress or purchase a larger size wedding dress that can be altered to fit, especially if you are getting married during the early weeks of your pregnancy. However, maternity wedding dresses are especially designed to complement or camouflage the growing stomach associated with mothers in the late second and third trimester ! there is little difference between the plus size wedding dress and maternity wedding dress. so when we are making a choice, we choose the prefered style from the both the plus size wedding dress and maternity wedding dress!