It’s impossible not to feel totally girly in a beautiful bra…
But did you know there’s a good chance you are wearing the WRONG size bra?
Don’t feel bad… 80% of bra wearers are too! This includes crossdressers and transgender women – as well as cisgender (genetic) women.
Wearing the correct bra size is critical. Bras that don’t fit right are uncomfortable and look bad under your clothes.
In this blog post, I’ll show you how to find your correct MTF bra size so you can choose the perfect bra for your female 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. The method below is simplest way to measure your bra size. This method is 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.
Here are some sites that carry a large range of bra sizes:
- Barenecessities.com – Bare Necessities offers a huge selection of bras, including plus size bras with smaller cup sizes. (Perfect for girls who don’t wear breast forms.)
- HerRoom.com – Her Room is another large lingerie site that stocks hard to find sizes. They offer band sizes up to 58, so there’s a bra for almost everybody.
- BiggerBras.com – BiggerBras.com specializes in plus size bras and carries a large range of cup sizes.
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.
So there you are, girlfriend! Everything you need to know about finding your correct bra size.
As always, I’d love to hear your thoughts! Please leave me your comments below. And if you have any beautiful bra pics, don’t forget to include them!
Love,
Lucille
P.S. Looking for a natural way to fill out your bra? Check out The Flat to Femme Program to discover an effective and proven approach to male to female breast enhancement.
Looking for your inner gender quiz please send to my email
Thanks so much for this, it helped me but I suffer from dyslexia and had a hard time with the numbers and charts. I discovered a bra size tape measure (here in the UK) that doesn’t need the maths! It’s from a company called Nudea and here is the link:
https://www.nudea.com/products/nudea-tape-measure
This REALLY helped me as I’m changing so much, I hope it helps you.
Thank you again and stay safe everyone! xx
Different brands and styles just don’t fit the same way. Also my body has not stopped from transitioning yet. I was more muscular and heavier. The upper body is shrinking while the breasts are growing. There are bras I’d love to wear, however I’ve opted for sports bras and bralettes for now. Racer back sports bras (to me) are less comfortable however I think they help with my posture.
I tried this method several times and each time came up with 42C, but I couldn’t understand why a 42C bra did not fit right. Always had that gap in the middle between chest and bra. A girlfriend (cis female) suggested I get professionally fitted. With that off we went to Soma in Sacramento. Was a wonderful visit. Come to find out I am a 40DD and the bras (yes I bought 4) fit perfectly.
That was really useful, Thank You. I actually know my breast size now, Your Article was wonderfully helpful, and i look forward to more info on this website.
Lucille,
While researching bra fittings, l came across this site: https://www.abrathatfits.org/calculator.php
One feature is factoring whether the user is assigned male or female at birth.
Louise
read all comments and still a little confused do you take measurements with a bra on or ha ha naked wife will help with tape holding but has a little problem with a store measuring me I think I could muster up enough confedence to go and would like it
I disagree with measuring above the breast. It makes more sense to measure just below where the band is actually going to be. That also matches the size that fits me best whereas measuring above the breast would result in a band size too big for me.
As for cup size I measure out as a C cup but I more often fill a B better so it just depends on style, material. Even brands are not consistent through styles.
If you’re not sure what size will fit buy a couple different sizes and return those that don’t fit or if you’re brave enough try them on in the store you can save yourself a return trip.
If I order a bra from China off EBay I’ve found I need to order a band size up.
Bra extenders are an excellent value! They give you that little extra room you need when you gain that little bit of weight during the holidays or if you find a cute little bra that’s just one size too small. I bought a 5 pack in different colors on EBay for under $2.