With a bra on, wrap a tape measure snugly, but not too tightly, around your rib cage, just below your bust line. This is your band size (US/UK sizing uses inches).
Then, wrap the tape measure around the fullest part of your bust. If the difference is:
1" / 2.5cm your cup size is A
2" / 5cm your cup size is B
3" / 7.5cm your cup size is C
4" / 10cm your cup size is D
About the Designer
Australian label Thistle and Spire gleans inspiration from art deco architecture and the romance of Brooklyn to create a collection of stylish, detail-driven lingerie. Thistle and Spire bodysuits and bralettes are crafted from the finest fabrics and materials for a comfortable fit and luxurious feel. Setting soft, feminine details alongside latticework and vintage silhouettes, Thistle and Spire creates stunning pieces with a seductive, yet modern direction.