Football fans stopped what they were doing to watch Kim Kardashian show off a body supposedly augmented by a pair of Skechers shoes. Justin Bieber took over a Best Buy commercial for Ozzy Osbourne. And in perhaps the biggest surprise of them all, Joan Rivers revealed a lot of what she claims is 100% her own body. The 77-year-old comedian wore short shorts and a tiny tank top in the ad and even though it might look like her head was transposed on another model's body, Joan claims it's all her.