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.