Hello Mari, I am looking for any info on Massey's and Burney's. You ask how do you get a boy to wear a robe, tell him he will be like superman a robe is just a fancier cape or that he can be like King Arthur. Good Luck with the costumes. I know what you are going thru I have eleven grandchildren, seven of them are girls, they range from age 15 mo. to 14 years. Always, Anna