I'm 90% sure this photo was edited to look like this, not taken that way. How do I get this effect – vibrant colors but still washed-out and 1950s-esque at the same time? Perhaps a sepia cast, but clothing colors still strong? Soft edges and glowy effect?
When I search "vintage photos," it's often a very different style, where the tone curve has the black point lifted. And normally in what I see described as "vintage-style" photos (eg, in Instagram) the colors seem less vibrant and skewed away from purples and greens.
Also the image feels very dreamy in that the edges seem to kind of bleed together.