I got myself measured for the first time today. I have been wearing a 34A basically my whole life. Apparently my back size (not sure if that’s is the correct term!) is 27 but the lady advised I would probably find a 28 too tight so to go for a 30. After trying a few on she told me to go for a 30D for plunge/t-shirt styles and a 30C for balconette styles. Does anyone else have to get different sizes for different styles? My friend thought it was weird the assistant suggested that! I can’t believe I have been wearing the completely wrong size 