Find Your Dome Size
There are 6 dome sizes. Each one is either Narrow or Wide, and assigned based on the underbust circumference of the user being below or above 73 cm:
Narrow (N) | Wide (W) |
---|---|
Underbust < 73 cm | Underbust > 73 cm |
![]() |
![]() |
You can measure your underbust by measuring around your rib cage below your breasts. If you don't have a flexible measuring tape, you can use a ribbon and a ruler.
Additionally, each dome is either S, M, or L and assigned based on cup size. Victoria's Secret has a good calculator to find cup size:
Narrow | Wide |
---|---|
S = AA cup | S = A cup |
M = A cup | M = B cup |
L = B cup | L = C cup |

For questions about sizing, don't hesitate to contact.