Anni Pinstripe Button-Up Shirt

I loved this shirt and I normally wear a small but watch out if you are busty! I purchased a size 4 which is what I normally wear 4-6 small and I'm a 34D and I had a hard time getting it buttoned. I reordered a size 8 because I was afraid that a size 6 might still be too small so hopefully it will fit because I really like it! Also, not much stretch if any with this top.