So simple. I need to make something like this...
Jacket: use heavy linen and base on wide top pattern, but maybe shorten shoulders.
GREAT site for DIY medieval and renaissance costuming (even the patterns are DIY!) -Aww, someone liked my site!
Childhood Secrets by atistatplay on deviantART
Girl's Medieval Gown and Sideless Surcoat - size 7/8. $69.00, via Etsy.
little girl in a DIY medieval princess costume
Medieval costume patterns