On Saturday Night Live, musical guest Rihanna looked amazing during her super-sexy performance. You wouldn't know it, but she was sick and had to get a shot of penicillin to ward off an infection. But everything went off just fine.

On Saturday Night Live, musical guest Rihanna looked amazing during her super-sexy performance. You wouldn't know it, but she was sick and had to get a shot of penicillin to ward off an infection. But everything went off just fine.