I have two questions if you don’t mind:
1) How do I know the right size breast forms for me?
2) How do I find the right shoe size?
I think proportions are the most crucial thing to keep in mind when it comes to selecting your breast forms. Your height, your shape, your measurements, and even your age will all play a role in determining what is the right size. The Breast Form Store has a ton of options when it comes to forms (and more) and they can help with recommending which forms are right for you.
As for shoes, generally speaking your femme size is one and a half times bigger than your boy size. Generally.
I am a 10.5 in mens and I usually wear a size 12 heel. But I can usually wear a 11.5 or an 11 wide. Like clothes and stores, sizes will vary. Torrid has a lot of size 12 heels but they run large so the heels I have from them are a size 11. En Femme actually has a really helpful page to determine your femme size that I have found really helpful. In my experience Pleaser run really true to size and seem to be very consistent with the conversion (so to speak) of boy sizes to femme size.
Have a question for me? Oh yes you do. Ask me here!