lu: It is hard for me to figure out what the OP was thinking when he/she asked the question 5 years ago.
“Also, usually when boys are makpid on looks, they are davka into thinness.”
Actually, most of the time it is not the boys who are makpid but the boys mothers who are the fanatics about their precious son marrying someone who is thin (although their own daughters are not size 2 or 4).
I do agree with you that there are men who only want a “supermodel”. I personally was not that way since I am no “Cary Grant”. My children are in the shidduch parsha and I do not ask for a picture of the person my child will be dating.