If your current bra doesn’t seem the right fit, the problem doesn’t always have to be the brand. 8 out of 10 women are found to be wearing the wrong size for their body. This might seem like a shocking statistic, but it’s not surprising once you consider that women barely know how to check for the right fit.
Here we bring you a guide to finding the right fit as well as a groundbreaking solution: bra sister sizes. Find out all the bra equivalent sister sizes for 34f, 34g, 36ddd, 38ddd, and 40dddd.
Summary
You can choose a different size than you’re used to as long as they have roughly the same measurements. Here is what you need to know.
- The bra sister size equivalents for 34F are 32FF and 36E.
- The bra sister size equivalents for 40DDDD are 38F, 40E, & 42DD.
Table of Contents
What are bra sister sizes?
If your cups fit well, but something still feels off, sister sizes might be worth considering. These complimentary sizes are near your current size but might fit you better than your everyday bra.
Going up in sister sizes means increasing the band but reducing the cup letter. Going down means reducing the band but increasing the letter.
However, if you find yourself in a bra that your breasts are spilling out of, it is time to go in for a fitting. It’s no different from wearing the right shirt!
Bra Equivalents for 34f to 40dddd
| Down | Current ‘ | ‘Up |
| 32A | 34AA | 36AAA |
| 32B | 34A | 36AA |
| 32C | 34B | 36A |
| 32D | 34C | 36B |
| 32DD | 34D | 36C |
| 32DDD/32E | 34DD | 36D |
| 32F | 34DDD | 36DD |
| 32F | 34E | 36DD |
| 32FF | 34F | 36E |
| 32G | 34FF | 36F |
| 32GG | 34G | 36FF |
| 32H | 34GG | 36G |
| 32HH | 34H | 36GG |
| 32I | 34HH | 36H |
| 32J | 34I | 36HH |
| 32JJ | 34J | 36I |
| 32K | 34JJ | 36J |
| 32KK | 34K | 36JJ |
| 32L | 34KK | 36K |
| 32M | 34L | 36KK |
| 32N | 34M | 36L |
| 34N | 36M | |
If your 34B isn’t doing you good, then:
Size up to a 36A: This will offer you a more comfortable fit than a 34B, given its two more inches of the band.
Go down to 32C: It will be tight around your body, with the same cup.
If you’re a 34C, your choices are
Size up to 36C: It does you more good with the extra room than a 34C but the same comfort when it comes to the cups.
Go down to a 32D: A more tight fit around the body. For someone who found a 36 dangling on their body.
The choices for 34D
Try a 36C: If you feel a 34D is too ill-fitting and digs into the skin, a 36C gives you more room.
Go down to a 32DD: A 32DD offers a more body-hugging fit within the same cup.
A 34DD? Then you can
Try a 36D: It gives you the comfort of the same cup but a 2-inch bigger band.
Go down to a 32DDD/32E: It gives you the comfort of the same cup but 2 inches smaller band.
Is a 34F too ill-fitting for you?
Size up to 36E: Get relief from a 34F digging into your skin with 2 inches more in the band.
Go down to a 32FF: Get more support than a 34F with a decrease in 2 inches band.
If your 34G doesn’t do you much good
Go up to a 36FF: Offers you relief from a 34G if you feel it’s too small for you. Nonetheless, the cup is the same.
Go down to a 32GG: Hug your frame 2 inches more than a 34G.
34H
Go up to a 36GG: Looser than a 34H fitting within the same cup.
Go down to a 32HH: Feel too small for a 34H? A 32HH will offer you a smaller fit in the same cup.
36
| Down | Current | Up |
| 34A | 36AA | 38AAA |
| 34B | 36A | 38AA |
| 34C | 36B | 38A |
| 34D | 36C | 38B |
| 34DD | 36D | 38C |
| 34DDD/34E | 36DD | 38D |
| 34F | 36DDD | 38DD |
| 34F | 36E | 38DD |
| 34FF | 36F | 38E |
| 34G | 36FF | 38F |
| 34GG | 36G | 38FF |
| 34H | 36GG | 38G |
| 34HH | 36H | 38GG |
| 34I | 36HH | 38H |
| 34J | 36I | 38HH |
| 34JJ | 36J | 38I |
| 34K | 36JJ | 38J |
| 34KK | 36K | 38JJ |
| 34L | 36KK | 38K |
| 34M | 36L | 38KK |
| 34N | 36M | 38L |
| 36N | 38M |
At present, if you aren’t finding your 36B of the perfect fitting, you can,
Try a 38A: A will hug you 2 inches looser than a 36B, and the cup remains the same.
Go down to a 34C: A 34C will hug you 2 inches tighter than a 36B without a change in the cup.
If you’re a 36C but aren’t quite sure about it
Go up to a 38B: Without altering the size of your current cup, you can expand the band around your torso by two inches.
Go down to a 34D: You feel that the cups finally hug you just right, but the bra could overall be more close-fitting? Then a 34D is two inches smaller overall without any change in a cup.
If you’re a 36D and not happy with it
Go up to 38C: The back is 2 inches wider without changing the cup.
Go down to a 34DD: The back of the bra is 2 inches lesser in circumference, making it more close-fitting than a 36D.
If you’re a 36DD and don’t think it’s your ideal choice
Go up to a 38D: It’s 2 inches bigger around your body, but the cup is the same.
Go down to a 34DDD/34E: It’s a closer-fitting bra that hugs you 2 inches more than a 36DD.
If you feel that a 36F isn’t doing you much good
Go up to 38E: This will give you more room for your body to breathe as it’s 2 inches broader, while the cups will be the same as a 26F.
Go down to 34FF: A 34FF bra is 2 inches more figure-hugging than a 36F. Although, the cups are the same as 36F.
If your 36DDD doesn’t feel right
Go up to a 38DD: With cups the same, it’ll give you 2 inches more space than a 36DDD.
Go down to a 34F: Get 2 inches cozier of a fit than a 36DDD and the same cup.
If your 36G bra isn’t doing you good,
Try a 38FF: It’ll give you 2 inches more breathing space while the cups remain the same.
Go down to a 34GG: Get 2 inches of a more secure fit around your body within the same cup.
