This kinda poses more questions than it answers but my theory is that it is a real pic of lenore_lovely in every respect apart from the face, which is AI. I think the legs and arms have been airbrushed, though.
It's just odd that someone has used the pic to also create a muscular looking woman as well, though I suspect the legs are from the original image.
If we could find the original lenore_lovely pic, that would be quite telling - but I don't have an Instagram account so and I can only scroll so far down her page before I get that annoying sign-up pop up.