Elements that Make Up the Perfect Bra Fit - Band and Cup Size

The back and front of your bra band should be level and parallel to the floor when you look at yourself from the side in a mirror. If the band is too tight, digs into your flesh or is just plain uncomfortable, it's too small. Signs that your band size is too big include breasts falling out from the bottom of your bra and your bra back riding up. A correctly sized band will fit firmly around you and not ride up in the back.

Try this little test (see below).

A new bra should be able to pass this test with the clasp on the loosest fitting - this allows you to tighten the bra as it stretches with wear and washing. Try to avoid buying a bra where the best fit is the bra's tightest setting. My suggestion is to have a bra that fits on its loosest or at least its middle fastening position.
Round all fractional measurements to the nearest whole number.

Your bra cups should be large enough to prevent breast tissue from bulging or spilling out over the neckline or armhole edges. You'll know if your bra cups are too large if they have wrinkling, or are clearly larger than both of your breasts.

Now that you have your perfect bra size
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