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.
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.
According to this I’m a 36DDD
The tape measure says I should be a 36B, but my 36B bra just doesn’t seem to fit as well as my 36A. Is it possible that breast tissue can be too soft to make a B cup work? I am 36 exactly on the band and 38 and a smidge on the cup calculator. So I’m thinking the B should be it. Should I use underwire or no wire? I recently bought your program Flat to Fem, so maybe this discussion will be moot soon… 🙂
so that’s what ive been missing when measuring! the actual band size ? great info .i always thought i looked pretty good but now this will help even more
I find that if you wear a real tight bras (but still acceptably comfortable)or one or two band sizes less than your normal, you can pull up tissues underneath into the bras and fill up at least an extra size cup or two .So normally my real breasts are 36C but can fill easily a 34DD as seen in the photos.Hope this is useful and many thanks
Very sexy..I love the little nipple peek
“Maryellen”…”Sweetie, You Are Looking Great” !
thanks paula
Thanks,
Thats different than your old calculation of do it below the breast and subtract 4 for the band size. I was 42 A that way and now 40 B this way. All good, but just fun to think I am a B cup. Being 6’3 250, with little teenager titties poking out at the age of 40 plus looks funky but hey, still fun to be me.
Need to come up with a list of ways to wear a bra to work without people freaking out in male mode. Or how to convince your wife you should be allowed to wear a bra. Until then, more breast massage until they are so big, she has to give in.
Yes, this is simpler way to measure your band size. The other way tends to calculate a band size that’s too large.
Glad you are having fun being you! 🙂
Hey, Lucille, thanks for this.
Your directions suggest I should be wearing 34D – not 36B or C. 34D seems a bit optimistic for a TG girl’s natural boobs! Anyway I’ll try next time I shop and see what happens. Maybe a simple one from Asda (our UK Walmart).
Hi Polly,
Actually, those are general guidelines for selecting breast forms. Unfortunately, we don’t always have a choice for our natural boob size, lol. In any case, I suggest going for a size you feel suits you best.
Hope that helps!
Thanks, Lucille. Yes what fits and feels right is best, I’m sure your right. Problem is different manufacturers produce entirely different fits. One bra gives me a boost and its nominally 36B but then its some obscure German make.
My boobs are nice and I used Flat to Fem in combination with prescribed hormones.
In answer to Timothea above, I had to go get some work done at a tire garage in T-shirt and bra mode – very obvious. Guys there were just very macho and yet very accepting. I just went as me and many jokes (not at my expense) were enjoyed. If you dare to just be what you are and ignore the idea of explaining yourself, it might work.
I enjoy my friends company and am brazenly what I am without explaining. If they ask, I then will tell, but they just take me at face value (so far), boobs and hair included.
One can learn something new around here almost every day! Lol 🙂
Thanks! I try 😉
Very good instructions hun, that is what a foundation store sales person showed me many years ago when she fitted me for many undergarments. It is so nice to know i am still doing it right. Veronnica