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How to Find Your Bra Size (MTF Transgender / Crossdressing Tips)

It’s impossible not to feel totally girly in a beautiful bra – but the fact is that most crossdressers and transgender women are wearing the WRONG size bra.

Don’t feel bad – 80% of cisgender (genetic) women are too!

Wearing the correct bra size is critical. Bras that don’t fit right are uncomfortable and look bad under your clothes.

In this article, I’ll show you how to find your correct bra size so you can choose the perfect bra for your feminine transformation.

How to Determine Your Correct Bra Size – Without Breast Forms

Determining your correct bra size begins with a choice: Will you be wearing breast forms with the bra?

In this section, I’ll explain how to find the correct bra size for your ACTUAL breasts (without breast forms). In the section below, I’ll show you how to find the correct bra size if you wear breast forms.

There are several ways to measure your bra size. Here’s the method used by Victoria’s Secret and most modern bra manufacturers:


Step 1: Measure Your Band Size

Place a tape measure under your arms and measure your chest circumference just above the breasts. The tape measure should be about the level where your bra straps meet the bra.

This measurement is your BAND SIZE. (Note: If the measurement is an odd number, round down to the nearest even number.)

Step 2: Measure Your Bust Size

Stand up tall and measure across the fullest part of your bust. The tape measure should be parallel to the floor and shouldn’t be too tight or too loose.

This is your BUST SIZE. (Note: If the measurement is between inches, round up to the nearest inch.)

Step 3: Calculate Your Cup Size

Subtract your band size (from Step 1) from your bust size (from Step 2) and check the chart below to determine your cup size:

If The Difference Is:

Your Cup Size Is:

0″-1/2″ (1.3 cm)

AA

1/2″- 1″ (2.6 cm)

A

2″ (5.1 cm)

B

3″ (7.6 cm)

C

4″ (10.2 cm)

D

5″ (12.7 cm)

DD or E

6″ (15.2 cm)

DDD or F

7″ (17.8 cm)

G

8″ (20.3 cm)

H

9” (22.9 cm)

I

10″ (25.4 cm)

J

For example, if your band size is 40” and your bust size is 44”, the difference is 4”. That would make you a D cup.

Your bra size is a combination of your band size and your cup size. (Bra size = band size + cup size) In this case, your bra size would be a 40D.

IMPORTANT: This size should be considered a starting point, as sizing varies from bra to bra. If possible, try on the actual bra before you buy.

How to Determine Your Correct Bra Size – With Breast Forms

If you wear breast forms, the process for finding your bra size is a bit different. Here’s how to do it:

Step 1: Measure Your Band Size

(Note: These instructions are the same as above, but I’ll repeat them here.)

Place a tape measure under your arms and measure your chest circumference just above the breasts. The tape measure should be about the level where your bra straps meet the bra.

This measurement is your BAND SIZE. (Note: If the measurement is an odd number, round down to the nearest even number.)

Step 2: Determine Your Ideal Cup Size

The next step is to determine the cup size you want to achieve. This should be a size that’s proportionate to your body: Not too big and not too small.

Generally speaking, the larger your body frame is, the larger your cup size should be.

Here are some guidelines:

  • Choose an B or C cup if you have a small frame.
  • Choose a C or D cup if you have a medium frame.
  • Choose a D cup or larger if you have a large frame.

Once you know your correct band size and desired cup size, you can purchase the proper bra and breast forms.

Easy right?  

Finding a Bra that Fits

Knowing your correct bra size is one thing. Actually FINDING that bra is another.

Unfortunately, it’s not always easy to find bras outside the standard size range.

Another option is to purchase a bra extender. A bra extender is an elasticized piece of fabric that hooks onto the back of your bra. It can add 1-3 inches to the bra band, so it’s a great solution for bras that are too tight.