My favorite ballet flats E. Porselli Milano.
I looked for their shop in Milan (when I was there last November) but when I got there it was their siesta time (12nn to 3pm), so therefore the shop was closed. I was told to come back at 3pm. Wala silang paki alam, ayaw nila ng pera.
You can order online at: http://www.pierotucci.com/clothing/shoes_ballet_flats/