very 30's: lace up shoes, shaped heels, slingback sandals, suede
very 40's: heavier heels, pumps, suede, platform soles, ankle straps, wedges, fabric & canvas
The shoes above have typical late 30's and 40's shapes, they would all look equally pretty worn with a skirt or trousers. Now, that we finally (almost) sold our old house I'm aloud to buy new shoes. Above there are quite a few from the 2013 autumn/winter collection which are amazing but sadly, already sold out here. How about the Alma Kendra? To die for!
From now on I really need to watch the Clarks collections for new, vintage inspired items for myself...
As a little extra, below a 1946 article on tips for buying the right shoes for your feet: