I bought this tank in a size 8 having bought the Get It Twisted Tank in a size 8. It's slightly bigger in the armpit/arm holes and could probably have gotten away with a size 6, but I'm not going to exchange it and will live with it. It's still super comfy and soft and I love the light purple colour. If I buy one in another colour, I think I will go with a 6. I'm 5'2" 36C.