O Cup Bra Size
How big is O cup bra size? Which O cup bras should you buy? Read our guide to find out.
An O cup bra size is a large cup bra size that fits women with an underbust measurement of between22 in and 62 in, and overbust measurement of between 40 in and 79 in. In terms of centimeters, the underbust measurement ranges would be between 56 cm to 157 cm, while the overbust measurements would be between 102 cm and 201 cm.
Check the table below for an overview of O cup bra sizes.
| O Cups | ||||
|---|---|---|---|---|
| US | Inches (IN) | Centimeters (CM) | ||
| Bra Size | Band (Underbust) | Cup (Overbust) | Band (Underbust) | Cup (Overbust) |
| 26O | 22-24Â in | 40-41Â in | 56-61Â cm | 102-104Â cm |
| 28O | 24-26Â in | 42-43Â in | 61-66Â cm | 107-109Â cm |
| 30O | 26-28Â in | 44-45Â in | 66-71Â cm | 112-114Â cm |
| 32O | 28-30Â in | 46-47Â in | 71-76Â cm | 117-119Â cm |
| 34O | 30-32Â in | 48-49Â in | 76-81Â cm | 122-124Â cm |
| 36O | 32-34Â in | 50-51Â in | 81-86Â cm | 127-130Â cm |
| 38O | 34-36Â in | 52-53Â in | 86-91Â cm | 132-135Â cm |
| 40O | 36-38Â in | 54-55Â in | 91-97Â cm | 137-140Â cm |
| 42O | 38-40Â in | 56-57Â in | 97-102Â cm | 142-145Â cm |
| 44O | 40-42Â in | 58-59Â in | 102-107Â cm | 147-150Â cm |
| 46O | 42-44Â in | 60-61Â in | 107-112Â cm | 152-155Â cm |
| 48O | 44-46Â in | 62-63Â in | 112-117Â cm | 157-160Â cm |
| 50O | 46-48Â in | 64-65Â in | 117-122Â cm | 163-165Â cm |
| 52O | 48-50Â in | 66-67Â in | 122-127Â cm | 168-170Â cm |
| 54O | 50-52Â in | 68-69Â in | 127-132Â cm | 173-175Â cm |
| 56O | 52-54Â in | 70-71Â in | 132-137Â cm | 178-180Â cm |
| 58O | 54-56Â in | 72-73Â in | 137-142Â cm | 183-185Â cm |
| 60O | 56-58Â in | 74-75Â in | 142-147Â cm | 188-191Â cm |
| 62O | 58-60Â in | 76-77Â in | 147-152Â cm | 193-196Â cm |
| 64O | 60-62Â in | 78-79Â in | 152-157Â cm | 198-201Â cm |
Best O Cup Bras
Below are some of the best O cup bras available to buy.
Elila Bra Soft Cup Jacquard (Mocha)
AVAILABLE ON BIGGERBRAS
Goddess Adelaide Underwire Full Cup Bra (Black)
AVAILABLE ON BIGGERBRAS
Goddess Kayla Underwire Full Cup Bra (Dark Leopard)
AVAILABLE ON BIGGERBRAS
Goddess Keira Underwire Banded Bra (Azalea)
AVAILABLE ON BIGGERBRAS
Goddess Keira Underwire Banded Bra (Damson)
AVAILABLE ON BIGGERBRAS
Elila Bra Soft Cup (Cobalt Blue)
AVAILABLE ON AMAZON
Elila Jacquard Soft Cup Bra Style (Aubergine)
AVAILABLE ON AMAZON
Elila Bra Soft Cup (Red)
AVAILABLE ON BIGGERBRAS
Elila Bra Soft Cup Jacquard Style (Nude)
AVAILABLE ON BIGGERBRAS
Goddess Celeste Soft Cup Bra Style (Fawn)
AVAILABLE ON BIGGERBRAS
Now that we know how big an O cup bra is, let’s look at some frequently asked questions.
What is the biggest cup bra size?
The Guinness World Record for largest natural breast size is 48V. Annie Hawkins, also known as Norma Stitz, wears a U.S.-size 52I bra, but based on her measurements — she has an 109.22-centimeter (43-inch) bust and 177.8cm band measurement — she should be wearing a 48V
What is the smallest cup size?
The smallest cup size is an AAA. While the A cup is considered the smallest available, for some women, it is still too big and compensating with a smaller band size won’t help. If you want something that’s going to fit your form you’ll have to go down a level to an AA or even AAA cup.
Ultimate Guide to Bra Cup Sizes
