Either u ask the poster of the pic (which happens to be the 2nd entry in the vanity thread - i guess u have it from there) politely if they could give u the infos oooor u try it by yourself and summon faeries all the time to see if that was right lol
Honestly it's quite hard to guess the exact hair and skin colour in this light and maybe u'll never be able figure out the face bc of the pose

that's what I came up with (nvm the hair):