The band is where 90% of your bra’s support lives. If your band is too loose, you’re essentially asking your delicate shoulder straps to do the heavy lifting, which never ends well. Grab your measuring tape and wrap it snugly around your ribcage, directly under your bust.
Make sure the tape is level all around—no sneaky dipping in the back. Breathe out, and take that measurement in inches. If you get an odd number, always round up to the nearest even number. That’s your band size. For example, a 31-inch ribcage gives you a 32 band.
Here’s a little cultural reality check: Victoria’s Secret models don’t live here, and neither does your sister’s bra size. Your band should be snug, but you should be able to slide two fingers underneath it. If it rides up when you raise your arms, go down a band size.
