I really wanted to love this cami, especially after reading all of the reviews .. but was disappointed when I received it.  Three main reasons:
1) Strange crepe-like texture, feels cheap/artificial (91% nylon, 9% spandex) - I personally would prefer stretch cotton
2) Material snags VERY easily - can't imagine this would be durable over the course of a pregnancy
3) Cut is very tight, and very long.  I am on the petite side and wore a size 2-4 prepregnancy, and I thought the "size 1" was too tight to wear comfortably (however am guessing the size 2 would be way too big, based on the size chart)

If these aren't issues for you, then go for it - just was not a good match for my preferences and needs.