How to measure- 1. Under Bust Measurement: Stand in front of a mirror wearing a non-padded bra.Take a snug measurement around your rib cage directly under your bust 2. Take a loose measurement around the fullest part of your breast 3. Refer to our size chart and chose your size Longline strapless Bra features long underband and supportive soft bone creates smoothing effect Detachable straps, Light Padding, Five rows Seven Hook & Eye (34C,34D,34DD,36C,36D,38B,38C used Five rows Six Hook & Eye) Suitable for daily use, posture improving, upper body shaping or a sexy outwear top with jeans or pants Non-slip at all: Anti-slip Skin-friendly wings and silicone strip fixed at the top to keep the bra stay in place all day Note: It's standard US size, please check our size chart for better fit