I find many different types of women beautiful, except really overweight girls. A bit hypocritical perhaps seeing as I'm rather overweight myself, but then I fully understand that I am unnatractive and shall remain single for the forseeable future. Then it can also depend on how they carry said weight, a 5'2 girl who is a size 18 is far more unnatractive to me than a 6' size 18.
If we're talking "fantasy girl" then mine is 6' size 10, long legs, black or very dark brown hair with pale skin, intense eyes which are blue/grey, pretty features, not alot of makeup, a nice arse and a chest that is proportional to the rest of her body. Stick her in a backless figure hugging dress or a corset and I'm one happy dude.