From the Wall Street Journal:
Nine-year-old Lin Miaoke became an instant global celebrity when she ostensibly sang "Ode to the Motherland" Friday night, clad in a red party dress and her hair in pigtails. But the voice heard around the world was that of 7-year-old Yang Peiyi. Officials have said that while Ms. Yang's voice was "perfect," Ms. Lin's appearance was more suitable.
For a trip back to the early 90s with the C & C Music Factory, go here.
Image: screenshot from "Gonna Make You Sweat" Youtube video http://www.youtube.com/watch?v=b714Wi4CDsQ