For girls :
- black bodysuit with long sleeves
- black skirt
- white or beige tights
- black pullover for warming up (if necessary)
- beige ballerinas
Appearance requirements:
- girls' hair must be made into a bun
- hair embellishments (decoration) are not allowed, for safety reasons
For boys:
- black t-shirt
- black leggings or stretch pants
- black shoes or ballerinas
- black socks
You can buy everything in store:
https://www.decathlon.be