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
In 2009, former Lonely Hearts head designer Helene Morris partnered with Steven Ferguson to launch underwear brand LONELY. Bringing aboard Ella Sarjant, lingerie designer for Stella McCartney, LONELY has crafted a well-defined aesthetic, creating nostalgic profiles with technical sophistication. Dedicated to easy-to-wear styles, the trio creates elegant pieces that offer both support and comfort. From longline bras to simple briefs, LONELY lingerie marries classic silhouettes with luxe details for an effortless look beneath any outfit.