as many others have said before: too thin isn't nice, nor is too fat. but everything between the extreme values is perfect. i prefer long hair to short hair and dark eyes (brown) to blue or green eyes. the eyes are the most important part of the face, and the face is the most important part of a girl. then probably the boobs (not too big, that's not nice, but she has to have boobs. think you know what i mean ), then the entire body (how tall is she etc.) and the least important thing for me - also many others may think different - is a "nice ass".

but a lot more important than these things is that she is a rather happy person that smiles often and a person that does not try to hide emotions. if charisma and character are good, they will automatically look good. no need to have perfect figure.