If you haven't gained a huge amount of weight or significantly changed shape (aside from the bump) then you can usually select the size you would normally wear when not pregnant. If in any doubt, it is best to measure your bust and hips, and use our sizing chart to work out which size is best. Bearing in mind that some brands size slightly differently from others, we also include some advice on each product page. We have also tried on every style to understand how they fit and move, in order to give you the best information we can!