Measure Ao Dai 1. Dress length: From scruff to ankle. Note! - Wear a favourite bra and a high-heeled shoes. Wear soft, thin, sleeveless clothes. Please follow the direction strictly. Do not measure loosely or tightly. Do NOT measure low-waist for waist. - You can use this guide to take the measurements ao dai for him, but do not need # 8, 9, 10, 11, 13, 14, 15.