who are some designers that make 1920 costumes?

i don't know any names but im sure i saw at least a couple of 20's outfits at the Vintage Fair which opened recently

20ies is very specific.

For vintage in general... I'd look at Ingenue, Belle Epoque, Sonatta Morales

There is also a vintage category on marketplace: Second Life Marketplace

Also this lady here lists a lot of stores that have at least 50ies or vintage stuff. anyone into vintage clothes

Thanks all I did check Ingenue and she has mostly shoes. But I’ll check out these other spots