Hollywood is a town awash in Botox, silicone, and fillers, a place where pouting, full lips, and eye-popping cleavage are, like the best movies, “made in Hollywood.” But even in Silicone Heaven, some Hollywood babes have kept it natural up top. They are silicone-free, without that tell-tale “plastic” look that has some stars looking as if they have a helium-filled balloon in there. How can you be sure? Well you can’t ever be totally certain. But if it looks like a balloon and feels like a balloon, it’s probably silicone. All of the babes on this list have maintained that they are silicone-free and natural. And, more to the point, they look as if they are. Of course, type in any famous female name and “boob job” and you will have some site or another “claiming” all sorts of things. We begin big and get bigger. Our “natural” babes start at a D cup and go up–wait for it–to an H cup! Let’s put things into perspective. If Katy Perry’s healthy D cup means a chest measurement of 36 inches, then Amber Rose’s H cup is a staggering 42 inches. We’ve got American hotties, Latinas, with a smattering of English roses. So, get ready. Here come 15 stacked hotties whose assets are God-given and not made in Hollywood.