Or they look alike because popular female culture is based upon being popular by looking like other popular people. Scrub off all the makeup and then see how similar they look.
Why attribute to a complicated conspiracy what can be adequately explained by commonplace "follow the leader"ism?
It's the fangs
Total Non sequitur but here's my potato question: They say most of the nutrients in a potato are from the skin. When they tested that, do you think they washed all the dirt off first?