Panache lingerie and swimwear use UK underband and cup sizing.  Please use this size chart to convert to international sizing.
 
Panache Allure Stretch Lace is enchanting and intoxicating, featuring bold lines in its stretch lace petal design that is romantic and modern. Semi-sheer upper cups flex to accommodate full or soft tissue with a smooth hug, while the lower cups are lined in contrasting color providing projection and stability while tantalizing the eyes. This full cup bra has multi-part cups and a hidden inner side sling, giving a flattering rounded and lifted shape.