
"In the Harry Potter Universe, technically anybody could legally and freely explore the body of anyone else if they really wanted to and whenever they wanted, so long as they had access to a single strand of that person’s hair and some Polyjuice Potion."
In LoTR, Gimli explains the appearances of Dwarf women to Eowyn. Aragorn responds it's about the beards.
And in the first Hobbit movie, there is a scene where you can actually see female dwarves which have beards.
You can find both scenes on youtube
And yet you made it to the bottom of the page.
#3 That's not how time travel works