>>14098543It often comes down to personal preference, which leads me to think it could be more sociological. Like, your preferred type may have to do with early experience.
Ultimately I don't think it matters much. If there's one girl around, you'll end up liking, or becoming accustomed to their features.
Celebrities who are revered for their beauty also tend to be ubiquitous because of it. A case could be made that the public is memed into thinking they are hot, in addition to any positive physical attributes they may have.