Especially online - etsy, ebay, etc? I have an event to go to (actually a strangely high amount of events) where I need an adorable 1940s outfit and I've been shopping online for days and can't decide!
Then I realized on Twitter that Strangerbird has a vintage shop (which was gorgeous, but no 40s!) and that you guys probably know amazing places!
ETA: It does have to be real vintage, not just inspired. These people I hang out with know their shit and they all have GORGEOUS clothes and I am hugely jealous :/