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 | 22-24 in | 40-41 in | 56-61 cm | 102-104 cm |
| 28O | 24-26 in | 42-43 in | 61-66 cm | 107-109 cm |
| 30O | 26-28 in | 44-45 in | 66-71 cm | 112-114 cm |
| 32O | 28-30 in | 46-47 in | 71-76 cm | 117-119 cm |
| 34O | 30-32 in | 48-49 in | 76-81 cm | 122-124 cm |
| 36O | 32-34 in | 50-51 in | 81-86 cm | 127-130 cm |
| 38O | 34-36 in | 52-53 in | 86-91 cm | 132-135 cm |
| 40O | 36-38 in | 54-55 in | 91-97 cm | 137-140 cm |
| 42O | 38-40 in | 56-57 in | 97-102 cm | 142-145 cm |
| 44O | 40-42 in | 58-59 in | 102-107 cm | 147-150 cm |
| 46O | 42-44 in | 60-61 in | 107-112 cm | 152-155 cm |
| 48O | 44-46 in | 62-63 in | 112-117 cm | 157-160 cm |
| 50O | 46-48 in | 64-65 in | 117-122 cm | 163-165 cm |
| 52O | 48-50 in | 66-67 in | 122-127 cm | 168-170 cm |
| 54O | 50-52 in | 68-69 in | 127-132 cm | 173-175 cm |
| 56O | 52-54 in | 70-71 in | 132-137 cm | 178-180 cm |
| 58O | 54-56 in | 72-73 in | 137-142 cm | 183-185 cm |
| 60O | 56-58 in | 74-75 in | 142-147 cm | 188-191 cm |
| 62O | 58-60 in | 76-77 in | 147-152 cm | 193-196 cm |
| 64O | 60-62 in | 78-79 in | 152-157 cm | 198-201 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
