while the letter refers to cup size

50% Polyester

Chantelle 3816 Ultra Nude C Essential Full Coverage Molded Underwire Bra

Bodyshaper's The Smooth Chic High Waist Torsette Bodysuit is made of polyamide/elastane

Satin side panels

Gemsli 39" Long Sleeve Shell Slip teen while the letter refers toGemsli FK31239" Long Sleeve Shell Slip Finally! A shell dress for easy layering. The top long sleeved shell is made out of a fine quality modal fabric that won't stick to your body. Features a drop waist with a cling free nylon slip attached. It is sized by the length of the shell dress and then size. Select the size of your regular sweater size. For the length measure from your shoulder down to your knee, or where you'd like the slip to hit.