I've noticed that a lot of the women who have larger breasts have bigger breasts because they've had kids, so those sag a little bit," Dani Moore said. "Mine are pretty firm. I've had many people ask me if they're fake because of the way they sit and look. Oh, and they float. That's one way you can tell real boobs from fake boobs. If you get in the water, the real ones will kind of float and the fake ones will kind of sink. It's because of the silicone."