Ha, I think I can fit both my feet into Shaq’s shoe, honestly.
My method for buying shoes is: Are they on sale? Are they 14 4e? OK, into the cart… I have some ugly shoes due to this process… Honestly, in the internet age, it’s not all bad. I know what size I need, and I can filter out the results. Other than dress shoes, I don’t care what they look like, so I tend to wear a lot of New Balance.
Sunglasses are much more difficult, as I have a pumpkin head and there aren’t any standardized sizes… At one point, I had the perfect pair and 4 years later I crushed them with my bare foot… I’m still upset about it (and still remember how much it hurt!)