Product Measurements:

XXS:
Underbust 54cm / 21.25in
Cup width 13.5cm / 5.25in
Cup height 13.9cm / 5.5in

XS:
Underbust 58cm / 22.75in
Cup width 14cm / 5.5in
Cup height 14.2cm / 5.5in

S:
Underbust 62cm / 24.5in
Cup width 14.5cm / 5.75in
Cup height 14.5cm / 5.75in

M:
Underbust 66cm / 26in
Cup width 15cm / 6in
Cup height 14.8cm / 5.75in

L:
Underbust 70cm / 27.5in
Cup width 15.5cm / 6in
Cup height 15.1cm / 6in

XL:
Underbust 74cm / 29.25in
Cup width 16cm / 6.25in
Cup height 15.4cm / 6in

Model is 178cm / 5'10" wearing size S