When I'm looking at gender, I no longer look at bodies, I look at the 'art direction', because in the real world, it is difficult for a man to maintain the illusion of being a woman without tells for someone taking notice. On the screen tricks are used, so instead, looking to see if these tricks are present give us an indication of whether the 'art director' deemed it necessary to employ them.
So first, I looked for the full image of one of the previous pictures posted.
The men are at least one step in front of the women, so straight off there is a trick of distance which will create the illusion the women are smaller than actuality compared to the two men on each side. Also, there is something off with the floor and the step, I'm not sure both sides are the same height drop. I can't work it out, but I think there is a purposeful reason to crop the feet off the men, it's not just they ran out of space.
Also in this picture, I would go check out the hands as they are often a tell. Note, Mae West has one hand in a pocket, an odd style to put in a dress; the other, the angle is hard to tell anything and it is somewhat obscured by feathers. Looking at Raquel Welch, one of her hands is also obscured by feathers, is that the actual point of the feather bower? The other is partially obscured by the male's hand, but looking, it doesn't really look smaller than his.
One other thing, while we can be pretty sure that Raquel's height is representative, we can't be sure of the same with regards to Mae West, she might be standing on a box.