What a wonderful way to showcase novelty fabrics! It's so cute; I'd go with the idea for a bright solidish inner border then black in the width of the shirts then maybe a pieced border in all the fabrics if you want it to be bigger, otherwise you could do a strippy binding in all the fabrics. :D

Just wanted to say - really cute quilt!!! :D

I'm thinking black for a border also. And I love it -- it is so cute!!