Not only did Bosom Bestie’s fit calculator get me the absolute perfect fit (better than any other calculator) this bra is amazing. I had been talking with my mom about bras and my struggle with a small rib cage and large cup size. She came to visit this week and I put on the bra to show her and she was amazed! She says it is such a gorgeous bra and fits so perfect. She’s going to buy one based on her new bosom bestie perfect fit size!