Pregnancy & Childbirth How to avoid common shopping mistakes when buying maternity clothes. By Isabel Kallman Featured Parenting Professional: Liz Lange. TwitterFacebookPin ItEmail Article Related posts: How to dress in the summertime when you’re pregnant. What workout clothes should I wear when pregnant? How do you pick a winter coat to buy when pregnant? How do you pick a maternity bathing suit? How to build a maternity wardrobe that provides versatility.