Kelly Osbourne has been in the public eye since her early teens, and for much of that time, she was subjected to cruel and unwarranted criticism about her weight.
Despite the fact that she's trimmed down tremendously in the past few years, Osbourne was subjected to "fat rehab" rumors as recently as last April.
While Kelly has never been shy about telling her critics where to shove it, she's clearly a firm believer that living well is the best revenge. In fact, these days she's firm in more ways than one:
Believe it or not, that's Kelly wearing a thong in the above photo and the 29-year-old fashion designer is clearly in the best shape of her life.