[See below for a newer comparison]
The above image is taken from Elle Magazine, and is a composite of Emma Mackey and Margo Robbie, with the blend so thorough that you cannot tell where one face begins and the other ends. I know there is software out there that performs this magic. In fact, a former writer used to use it, claiming it was superior to my face splitting. Anyway, you can see by the sunglasses atop the head and the vertical line in the neck that it is a composite.
I have long claimed that such comparisons need a gold standard to be reliable, and that that standard is the distance between pupils. The software approximates by sizing the two faces so that they fit one another, but that is not conclusive. When I saw this composite, I immediately thought I could do better.
I agree that these two women look remarkably alike, in fact, could be twins. But twins do not look alike, rather, only bear strong resemblance that please our outer eyes without ferreting out details. The question is, if these two are identical, do their features align? We cannot tell that by mere examination with the naked eye. The details are too fine. SEE DOWN BELOW FOR A BETTER PHOTO COMPARISON.
Above is a face split of the two women. I have set the pupil distance on each at one inch, and then combined the faces and set the pupil distance again at one inch, this after making sure that the eyes align with one another. Because the two photos have the heads at different angles, we get a very wide face, but that does not matter. It is only alignment of features that does, and here we can see that the upper lip and nose do not align. That means two different people, even as they look so much alike.
I maintain my methodology is superior to the naked eye, and to software out there that uses computer programming to blend faces, forcing them together without rigor. Of course my technique is not perfect, and human error plays a role, but by and large the method conveys useful information, as it did here. I find it most useful in telling us that two people are not the same, but often enough it shows that two people are indeed identical. Not here, however.
On suggestions that the face angles were interfering with things, I went and got new photos, and got them straightened. Both are looking directly at the camera.
Pretty darn close, I have to say. Robbie has a slightly longer face and bigger lips, or maybe just more lipstick. The ears do not align, even as these appear to be straight-on photos. I have to withdraw my work from yesterday and go with this.
PS: Their eye colors are different, but in show business, that means nothing. In the Elle composite, they have made them the same color.