85% of women are wearing the wrong bra size. Learn to get the bra with just the right fit, at all times. 

 (scroll down for bra measurement & bra size chart guide)

Determining the correct, and most current,  measurements for your band, bust, and the cup will make it so much easier for you to find bras that fit right and fit you, no matter where you get your bras. Plus, with those measurements, you’ll finally get confirmation to toss out or donate those bras in your drawer that you’ve been keeping just to keep.

90% of bra support is in the band. It’s your suspension bridge, your foundation, your way to a perfect fit. The band is literally your bra’s base and is built to support your breasts. If it’s not secure, you’re not secure. It should feel comfortably snug and sit perfectly level around, from front to back. If it rides up and you constantly have to pull it down with even the slightest movement, the size is too big. If you feel it digging into your skin throughout the day, countdown the hours until you can go home and finally take it off, or find alarming marks once you do, it’s too small. The fit must be snug but not to the point of cutting off circulation.

When it comes to your cup, it should feel like a soft, just that right comfortable hug. Your breasts should be secure and encapsulated fully within the cup. If there are gaps between the cup and your breast, you’re wearing a cup size too big. If you find your breast spilling over the top, side, or bottom of the cup, you most likely need to go up in size. You also need to consider a larger cup size if the underwire or bottom of the bra is resting on your breasts.

Do know that all cups are not created equal. Truth be told, they change proportion with your band size. This means that the cup on a 36B bra is not the same as a cup on a 32B bra. 

Test Your Bra Size

Best Part: Finding Your Band Size

Make sure to wear a lightly-lined or unpadded bra before measuring your band size. Now, this is where your handy measuring tape comes in. Wrap the measuring tape snugly across your back, keep it parallel to the ground and measure directly under your bust. 

You want your measurement to be an even number. If it is not, round to the nearest even number based off the type of fit you want. For example, if you measured a 33,  and want a tighter fit, you would round down to a 32. If you want a looser fit, you would round up to a 34.

That number is your band size.

Dreaded Part: Finding Your Bust Size

Keep the measuring tape around your back at band level and measure across the fullest part of your chest, making sure to hold the measuring tape snugly against you and parallel to the ground.

This number is your bust size.

Exciting Part: Finding Your Cup Size 

Bust – Band = Cup. Subtract your band size from your bust size.

Use the chart below to determine your cup size. The larger the difference, the larger your cup size.

For instance, if you had a 3” difference, your cup size is a C. For example, your band size was a 34. Then, your ideal bra size is a 34C.

 U.S. Sizes
Difference 1" 2" 3" 4" 5" 6" 7" 8" 9" 10" 11" 12" 13" 14" 15"
Cup Size A B C D DD


U.K. Sizes
Difference 1" 2" 3" 4" 5" 6" 7" 8" 9" 10" 11" 12" 13" 14" 15"


Europe Sizes

Difference 1" 2" 3" 4" 5" 6" 7" 8" 9" 10" 11" 12" 13" 14" 15"
Cup Size A B C D E F G H J K L M N O P