Sunlover, Have a look and see if you have a Vintage clothes shop near you and go along yourself. I would suggest you also go and ask in your local Charity Shops, because if they get these sort of clothes, they generally send them to Auction. If you have a local Auction room ask them too.
I would tell you that the women of the 1940's in generally, where a different shape to the women of the 2000's, women had hour glass figures. My Mother's 1942 Wedding dress has a 20 inch waist. I used to sell on any clothing I got through my business, so I know how tiny some of the clothes of this era are. I do have a 40's ermine stole, but I think it may be a bit hot for that in Calis.
The good news is, the Forties era is very fashionable now and a lot of the shops on the High Street sell 40's style clothing. Perhaps a floral dress add a belt and get a trilby style hat felt hat and a envelope bag to put under your arm and add a corsage to it.? There are also lots of 40's style shoes in the shops just now. I bought a floral pair from Rocket Dog and I love them.