I like the curves on her back and waistline, but my favorite part of a woman is her lower abdomen, I just want to rest my head on her naked tummy while see strokes my head and runs her fingers through my hair.
Although I've always been most attracted, physically, towards women with nice legs (toned, slightly curvy probably leaning more on the skinny side) it would be weird for a woman to have the most attractive legs in my book and then sport a large gut and fat arms haha. So on that note I would have to say, on the physical side of attraction (because that is what this topic is about people) the most attractive feature for me would be someone who values physical fitness, stays in good shape and maintains good health.
Oh yeah, and boobs. Everyone loves boobs.
And yes, I am female.