You’ve probably heard it before: most women (as many as 85%, according to some statistics) wear the wrong bra size. And wearing an ill-fitting bra is more than just uncomfortable. It can potentially pose problems ranging from poor posture to painful breasts and tingling hands. Luckily, anyone can learn how to measure bra size.
Subtract your band size from your bust measurement, then use this number to pinpoint your cup size in the chart below.
Bra bands expand the more you wear them, even as much as three inches. Pick a band size that fits comfortably on its loosest setting so that you have room to tighten it later.
When you’re wearing the correct bra size, your bra should sit snugly against your skin. The tops of the cups should lie flat and smooth against your breasts, and the band should sit low and even on your back without digging in. With new bras, you should be able to fit no more than two fingers between the band and your back on the loosest setting.