Looks like a kilt to me.

Nothing special. There are plenty of young people doing their own thing. Dixon is just one of the characters in this sequel or remake about some teenagers at a high school - Colegio Elite Way - who form a musical band to compete in "La batalla de las bandas". Like the others of his generation he has his own lifestyle. He has a crest, likes rap, wears skirts, has a lot of rings and other accessories.