My Life Behind Bras

FAQs

HOW TO MEASURE YOUR BRA SIZE

Bra Fitting Guide

Use the steps below as a starting point to better understand your bra size and fit.

  1. Get Ready

    Put on your best fitting bra. This will help to generalize shape ever so slightly, as well as lift the breast so you can access the ribcage better.

  2. Ribcage Measurement

    Exhale, releasing the air from your lungs, and wrap the measuring tape snugly just below the breasts around the ribcage. The tape should follow your bra line. Write down this number. Do it again.

  3. Cup Measurement

    Loosely wrap the measuring tape around the fullest part of your breast. If your breasts are very heavy, sometimes it helps to bend forward from your waist. You can do it seated, and then wrap the tape around the fullest part of your breasts. Write this number down. Do it twice.

  4. Do the Math

    Subtract your ribcage measurement from your cup size measurement. We start counting cup size at B. We also use UK sizing after cup size DD. A UK F cup is the equivalent of US DDDD/G, and Euro size G. But Euro sizes are measured by different metrics, so there is always a slight variation.

    Even within each brand, every style fits differently. Which is why it can be so confusing to find the right size and right fit.

Remember, the cup size measurement is a starting point, and not written in stone. Breast tissue firmness, fullness, and shape are variables that change with each individual.

A common example of mis-measuring might have a shallow breasted woman measuring at a smaller cup size than is truly ideal for her body.

Also note that each brand has a multitude of styles, and they might be for petite, average, or full figures, so each style will fit slightly differently even though they are the same size. Some brands also offer full busted styles and sizes, which accommodate petite to average band sizes with ample cups.

Nonetheless, below is a size chart which will tell you what you are measuring at in cup size after subtracting your band from your cup measurement.

The chart below is based upon US and French sizing. UK sizing is different, and offers larger cup sizes than most US or French brands. A UK G cup is the equivalent of a US I cup. It is best to consult with someone who has knowledge of these sizes and brands for the best fit.

Size Chart

DifferenceCup Size
1″B
2″C
3″D
4″DD/E
5″DDD/E/F
6″DDDD/F/G
7″FF/H

This should give you some idea as to where to start your bra fitting journey.

If you find yourself in New York City, come see us, and we’ll help you figure it out in a NY minute!

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