Boudoir maternity

Hey ladies! I am 24 years old and my husband and I were told that this baby(currently 15 weeks) must be our last. So as a gift for him I want to do a maternity boudior photoshoot. My friend is helping me and we are gonna to a DIY shoot. Any tips for us or favorite poses/props? She loves to practice photography as a hobby and loves editing. I wanted to do it for our 5 year anniversary but I will only be about 16w when we'd have to get the pics done. I don't think I'd be big enough and am afraid of just looking "chubby" 😬 So we hope to do it around April/May I think. I will be buying all the props. So any recommendations on an outfit or flowers or whatever I'd appreciate!! ❤❤