Here are my girls' chef hats & aprons that I completed just before Miss 0 was born. The girls wanted aprons to wear while cooking with me, and I just couldn't resist these hats http://www.michaelmillerfabrics.com/Blog/Chef_Hat.pdf
There is a free apron pattern there also or you can do what I did & make your own.
Each one has a contrasting band to match their apron so there are no arguments. Not difficult to make, although time-consuming when you have to make three!!!