There are many zhoe styles that are androgyne.
Though I understand that this in not what you want to wear all the time.
They work well if your wearing pants.
If you wearing a skirt though, there are not so many androgyne styles
('m not even sure they'd be one that would fit with a skirt or dress).
Size 16 in stores, forget about it, it doesn't exist (its hard to get anything past 12).
I'm sure you can make them custom, but of course, you'll spend more. Although, considering the very high markeups on shoes, I wonder if it would not be cheaper to get someone do to them for me :-).