Miranda Kerr used to be pretty flat chested before her plastic surgery. But, her breast implants increased her bra size to a C cup. The Victorias Secret model has to keep up a diet and exercise regiment to keep up her slim figure. Many people think that she just doesn't eat (because she's sooo thin), but the star says she does daily workouts, yoga, and eats healthy foods. Here's the result of Miranda Kerr's boob job.