I just found out that one of my bridesmaid is expecting, but it's still a secret because she and her husband haven't announced it just yet. I am so beyond excited for her because they have been trying for the past two years and it has finally happened. She is due in September and my wedding is in November. When should she purchase her bm dress? Are there any other ladies that have been pregnant while being a bm or anyone have a pregnant bm that may have some advice on this?