Colleen, you've made some very interesting observations in regards to the fact that (heterosexual) men especially are drawn to the conventional proportions, even if they're chubby chasers! You are also very right that most men have one type they are attracted to, and that they rarely stray from it. However, I've noticed something else amusing:
I'm not most men's "conventional type" - men down here are attracted to long hair, and I always have mine short and wild. Men down here seem to gravitate towards the conservative look, and I'm anything but. (Men up in DC are a whole 'nother story - it's amazing what people's
regional preferences are!) While saying this, I've been told time and time again that I'm everyone's exception, and I believe it goes back to what you said - I still have the proportions they like - large breasts, child bearing hips, and a flat stomach, the very delicate facial features, the soft jawline, and full lips. I think it's something heterosexual men are intuitively drawn to, no matter what their superficial "type" may be.
On a homosexual note, I've observed the gender-type rule for some people. On any gay personals site, they usually ask you this question: are you butch, femme, androgynous, or all over the map? and ask you what your preference is in a partner. my girlfriend, for instance, is not attracted to extremely feminine women (long hair, loooots of make-up, dresses all the time, etc), nor is she attracted to skinny women or those thinner than herself. She likes 'em with meat on their bones - that doesn't mean fat - she doesn't like obese people, either... just average, athetic/muscular, and a few extra pounds.
I'm bisexual and I don't have a type. Honestly. I'm attracted to masculine men; I'm attracted to feminine men; I'm attracted to feminine women and androgynous women, though not extremely masculine ones; sometimes I'm even attracted to those who call themselves genderqueer or those who are trans! I've always said that if I had to narrow it down, my type is called "HOT"!
For me, "hot" comes in many different varieties.
CousinRockingChair: who said you had to be PC? I'm probably one of the least PC people on this earth. We all have our own opinions and shouldn't be afraid to voice them. Agree to disagree, you know? I personally think it's amazing that she is capable of owning her fat, that she is somewhat attractive, but I would definitely not want my body looking like hers - I was miserable enough at 175.