Ooh! La, La! Couture's adorable long sleeve Pink Lady/Silver Perfume Birthday Dress 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.