Psychologists (including myself) believe it's the individual who makes choices, forms their own attitudes, etc., while sociologists believe it's only a function of greater society and not under the control of the individual.
Well, nobody really makes choices, do they? We're all just a bundle of stimuli and reactions.

If you grew up in Manhattan, chances are you're attracted to skinny girls because that's what society tells you is valuable; and if you're not, and you're attracted to fat girls instead, it's just because some biology won out over society.
I like plump girls. They have much better personalities and are, on the whole, much more intelligent than the skinny, pretty ones. If I'm going to spend any significant amount of time with you (1+ hours), I have to be able to talk to you about stuff other than... e.g. cosmetics, TV and Lady GaGa.
There was nothing particularly negative about their looks either. They were both sort of... generically attractive, if you know what I mean.
They are "lower-tier model" attractive: things are technically fairly all right, but there's nothing outstanding or notable about the features.