The size is 90cm. This is a set of 3 items: a pink dress, a light blue gown, and a headband. The satin fabric is layered with organza, giving it a sparkling and special feel! Organza is also used for the headband. The dress has a button on the back. It's a flat button, so it won't feel uncomfortable on the back. It's a long dress, the same length as the gown. It can also be used for sleepwear.