IT HAS A BUCKLE. . PRINCESS MODEL DRESS SIZE 2 YEARS OLD Chest 51cm, dress length 49cm. 3 YEARS OLD Chest 53cm, dress length 51cm. 4 YEARS Chest 57cm, dress length 55cm.. 5 YEARS Chest 59cm, dress length 60cm. 6 YEARS OLD chest size 62cm Dress length 70cm. 7 YEARS, chest size 64cm, dress length 72cm. 8 YEARS old chest size is 66cm, dress length is 76cm.. 9 YEARS old chest size is 69cm, dress length is 82cm. 10 YEARS, chest size 71cm, dress length 86cm. 11 YEARS OLD, chest size 73cm, dress length 90cm. 12 YEARS OLD, chest size 75cm, dress length 96cm. 13 YEARS OLD chest size is 77cm and dress length is 98cm.