I like a girl who is about a 12-14, with some curves on her.
Not fat, but some womanly curves. I went to a wedding recently and sat opposite two sisters who were facially stunning, but also borderline anorexic. Their father publicly lambasted them for being too skinny, which although I felt highly inappropriate at the time, was also what they needed to hear. They were highly embarassed, but I also knew they could have had the eye of most blokes present if they had been less obsessed with their figure and put a bit of weight on....a sad indictment of modern life I'm afraid.
Nothing to be ashamed of being a bit curvy, lots of men love it.