Ooh! La, La! Couture's sassy Perfume Bottle Birthday Dress, with black drop waist bodice and candy pink tulle skirt, is perfect for birthday parties, pageants and other special occasions. THE NUMBER ON THE PERFUME BOTTLE MATCHES THE SIZE OF THE DRESS. So, size 24M and 2T have a 2 on them, 4T and size 4 will have number 4 on them, etc. and Size 6X/7 features number 7.