Why are models very tall and very slim?

Is very tall and very slim the true preference of beauty for females? I mean really.. are you guys most attracted to tall slim women? I personally find them super attractive yes, but I also find other body types very attractive.
I don't understand why the extremity?
Why are models very tall and very slim?
Why are models very tall and very slim?
Why are models very tall and very slim?
Why are models very tall and very slim?
Why are models very tall and very slim?
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