Some of the shoes were a little too big. They were vintage; I assume when they found a pair they really wanted to use, a little big was close enough.
For the really early shoes, it looks like they also used vintage (or vintage-style) non-stretchy stockings. Nice touch 
I think you’re right about the 2010s shoes; so many of the heels right now are so high I would literally be unable to walk. I got a pair with 4" heels on eBay once, for fun, and I couldn’t walk down even a slight incline.
