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How to Measure
Underbust (ribcage)

Your first measurement is around the diaphram. Using a tape measure, take a firm measurement around the rib cage, directly underneath the breast. Make sure the tape measure doesn’t slip down your back, hold it very firm and tight. Now take a look at our size charts to find your band size.

Cup Size

Finding your cup size is not a perfect science. To find your best cup size, use our fit tips in the video above.

Shop Bras
Bra Measurement Mapping Guide Bra Measurement Mapping Guide

Straps should sit securely on shoulder. You shouldn’t be able to fit more than two fingers under the strap. Adjust as needed for additional support.


Otherwise known as the bra center, should sit flat in the middle of your chest.


The breasts should sit comfortably in the cups with underwire flat against diaphram.


Lays straight across your back.

Problems & Solutions
Underwire too loose
Underwire coming loose?

If your underwire starts to poke out of your bra, the size you’re wearing is probably too small. It’s important to follow the care instructions to make your bras last.

Bra band riding up back
Band riding up your back?

Your bra straps might be too tight. Loosen them so that the bulk of the support is coming from the band, not the straps. If this doesn’t work, your band could be too big. The band should fit so that it lies straight across your back.

Space between your breasts and the the cup?
Space between your breasts and the cup?

Try a smaller cup size. There shouldn’t be any space between you and your bra.

Bra muffin top
Bra muffin top?

If your breasts are spilling over the top of the cup, you need to go up another size.

Center gore not lining up
Center gore not lining up?

The center gore anchors the bra to give you optimal support. If it’s not sitting against your body, you need to go up a cup size.

Slipping bra straps
Slipping straps?

If your straps are slipping off your shoulders, first try tightening them. If that doesn’t work, try a cross-back or racerback bra.

Under boob?

If your breasts are coming out of the bottom of your bra, you are suffering from under boob. First, try tightening your bottom band. If that doesn’t work, you may need a bra with more cup capacity. Try a cup size up.

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