I made the biggest (18-24 month) size figuring that as I worked on a new pattern
I didn't need to torture myself by working in miniature.
For the outside I used fabric from Heather Ross's FFA2 line,
and the lining is from Amy Butler's Soul Blossoms line.
They are really cute, but I wouldn't put them on an active almost two year old unless I use a sturdier outer fabric.