Boys Size authentic 5-7 Royal Prince or King

My model is wearing the 2 piece costume over a white button up shirt and black pants, and they are not included in the listing. I have this listed as a 5-7, my model usually wears a size 5 or 6, and this is a little big on him. it might even go for a small 8. Only the coat and cape will be mailed. Coat is made in heavy red satin, and cape is made in a very light weight 2tone blue satin( and is really authentic flowey) Coat has white cotton puffs at the top of the sleeve and is accented with black and gold trimming to help add to the historical aspect of this costume. Front is embellished with matching trim, white satin panels, gold lace(filigree) , and jems( acrylic rhinestones). Ties in the front with matching white cords.
please let me know if there are any questions!