Let us not forget that Peter Jackson also holds to the view that dwarf women have beards. From the Two Towers:
GIMLI: It's true you don't see many dwarf women. And in fact, they are so alike in voice and appearance, they are often mistaken for dwarf men.
ARAGORN: It's the beards.
GIMLI: And this in turn has given rise to the belief that there are no dwarf women. And the dwarves just spring out of holes in the ground!
(That might only be in the extended cut - it is now a few years since I saw the theatrical edition).
Cheers!
GIMLI: It's true you don't see many dwarf women. And in fact, they are so alike in voice and appearance, they are often mistaken for dwarf men.
ARAGORN: It's the beards.
GIMLI: And this in turn has given rise to the belief that there are no dwarf women. And the dwarves just spring out of holes in the ground!
(That might only be in the extended cut - it is now a few years since I saw the theatrical edition).
Cheers!