I love these Amazon denim overalls so much!! They are extremely comfortable. The back has a scoop neck with adjustable straps! I would stick with your normal size! I did size up to a medium for pregnancy and I think this body suit will carry me through full term! I linked the most buttery soft bodysuit I’m wearing! I linked 3 versions of it from Abercrombie (long sleeve, short sleeve, and sleeveless tank!) also linked some similar options on Amazon!