Underwear comes in small, medium, large, or extra-large sizes. The smallest is A and the largest is D. Suits are sold according to chest measurement and waist measurement in short, medium, or long lengths. Be sure and try on the suit and check for fit in front of a mirror. To find your correct shoe size, ask a salesperson to measure your foot. Be sure you try out the shoes in the store before you purchase them, as shoes cannot be returned after they have been worn.
Socks correspond to shoe size.
Ask a salesperson to help you find the right size.