Ke$ha performs live on stage during the second day of the Wireless Festival at Hyde Park on July 2, 2011 in London, England. (Photo by Jim Dyson/Getty Images)
Chinese artists perform on stage during the opening ceremony of the International Horticultural Exposition 2011 at the Exposition Park on April 28, 2011 in Xi'an, Shaanxi Province of China. The World Horticultural Exposition 2011 will be held in Xi'an from April 28 to October 22. (Photo by ChinaFotoPress/Getty Images)
A Papuanese tribal man poses for a photograph during the Baliem Valley Festival on August 9, 2010 in Wamena, Indonesia. The Dani, Yali and Lani tribes gather at this annual festival each dressed in distinctive tribal attire, stage mock battles, perform traditional music and dance, and celebrate with a pig feast. (Photo by Ulet Ifansasti/Getty Images)
Jennifer Lopez donates a stage outfit that she wore during an American Idol performance to Hard Rock Cafe’s memorabilia collection at her CD signing to celebrate her new album «LOVE?» held at the Hard Rock Cafe Hollywood on May 3, 2011 in Hollywood, California. (Photo by Michael Caulfield/Getty Images)
Snake woman Lunga performs on stage during the “Das Goldene Lenkrad” (“The Golden Steering Wheel”) award ceremony on November 5, 2008 in Berlin, Germany. (Photo by Andreas Rentz/Getty Images)
Singer Rihanna in the audience at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Larry Busacca/Getty Images For The Recording Academy)