I had been (circa: 2014) poking around the Default Database, and let me tell you what a downloading spree I went on! Most of the clothing defaults were modern, but a few had a good mesh that could be Medievalized. Today I bring you Antka's defaulted Seasons AF Summer Dress on WitheredLilies' Snuggly Dress Mesh with Child Of Air's Altered Tunic Textures as a base with a floral overlay.
The colors replace Grey, Purple and Gold respectively.
Default Replacements, there can only be ONE.