Something is terribly wrong with this vulva. My first guess would be Lichen sclerosus atrophicus. There is some inflammation and maybe hyperkeratosis, It should be closely examined by dermatologist or at least gynaecologist
Such a young girl but the small inner labia is already coming out of the outer big labia. She will get troubles when getting older, cause they will hang out more and more seriously. It won't look nice. Just take a look at the older women 1 picture above. Her slit is still pretty well and you would like to suck her until madness, won't you?