Here's a picture of Kate Upton around age 17 or 18 - right before gaining superstardom. The difference in her breast size is more than a cup which leads me to believe that she did, in fact, get a boob job. She could have still been growing, but it seems like the dramatic change wasn't totally natural. Besides, with one glance at her breasts now, it's hard to believe she's all natural. She'll never admit to getting plastic surgery, so it's up to you to form your own opinion. What do you think?