Flower version Eevee

I don't know the answer, so hoping someone will help us both out here

I want to keep one for Leafeon in hope it works.

Yeah, the flower eevees I evolved had flowers in their hair. I have a very cute flowery vaporeon. Was hoping to catch a shiny version so my daughter could have a pink vaperon with flowers but no luck on shinies :(

I can confirm that Flareon, Jolteon, and Vaporeon get the flower crown; I assume the others would as well.

All Eeveelutions keep the flowers. There's even in the game's data Glaceon and Leafeon with the flower crown too.

It is indeed possible (not sure about shinny's). Here is my entire collection showing just that https://i.imgur.com/Q78MfPZ.png

the eevee retains its flower throughout evolution. i evolved a flower eevee into a flower vaporeon.

you can still evolve an eevee to jolteon and still keep the flower; its just that wild eeveelutions do not have flowers