I bought a 36 B initially, because that's what I normally fit into. I am 5'2" and 115 lbs. I ended up returning the product because it fit too snug, but I bought a bigger size 38 B....and I just HAD to right a review. This is BY FAR the-most-AMAZINGLY comfortable bra I have ever owned. It's meant for nursing moms, but I fully intend on wearing it long after I am done nursing. (Side note: I am currently weaning off from pumping for 5 months....and the bra still fits me great). It is the first bra I have ever worn where the shoulder straps fit comfortably as well. Buy this bra...you will not be disappointed. I would just say that you might want to order one size up.....unless you like things tight. It will still give you a nice lift even at a size up.....and the shape of the bra is very attractive and yet just as comfortable as a sports bra....and I love that it has padding without wires. Can't say enough good about this product!