If an item has the word “Maternity” in the style name, this means that it is a true maternity style. You can use your pre-pregnancy size in these items. Other styles that are found within our maternity collection are not made for maternity but have certain characteristics that work for expectant women. You should increase your size by one or two sizes, depending on your trimester and how other clothes are fitting. If you have questions about size or fit, you can reach out to our maternity specialists at firstname.lastname@example.org.