Measuring your bra size can make a big difference in comfort. It involves two main steps: measuring the band size by wrapping a tape measure snugly around your ribcage, just under your bust, and measuring the bust size at the fullest part of your chest. Subtracting the band measurement from the bust measurement helps determine the cup size. Does this make sense to you, or would you like a bit more detail on how to take these measurements? Have you had trouble finding the right fit before?