I wore this twice, for the entrance ceremony and the graduation ceremony. The size is 120. My child's height was around the middle of the class, maybe a little taller, but they suddenly grew over the summer, and 120 was just right. They were able to wear it without any problems at the entrance ceremony. The socks are from Elvindor, and I'll include them as a bonus, unused. The dress and jacket have been home-cleaned. You can wear them right away.