I have seen my wifes sister, nude many times
They dont look alike body wise.
- My wife is tall and "slender" and her sister is small and chubby.
- Wife got coin sized nipples and big boobs, sis in law small chubby boobs and the most cutest tiny nips i ever played with
- Wife's pussy is a outie, and sis in law's pussy is a innie
And the list goes on.
They only share the same dirty minds (and me) in the sex department