Beyoncé, Formation World Tour © Getty Images
Rihanna, MTV Video Music Awards © Getty Images
Selena Gomez, Revival Tour © Getty Images
Miley Cyrus, Miley Cyrus and Her Dead Petz Tour © Getty Images
Rihanna, iHeartRadio Music Awards © Getty Images
Beyoncé, Rock in Rio, Rio de Janeiro © Getty Images
Madonna, Super Bowl 2012 @ Getty Images
Lady Gaga, MTV Video Music Awards © Getty Images
Jennifer Lopez, 02 Arena © Getty Images
Lady Gaga, MTV Europe Music Awards © Getty Images
Bjork, Coachella Music Festival © Getty Images
Kylie Minogue, Plaza de Toros de Las Ventas © Getty Images
Bjork, Summer Olympic Games © Getty Images
Grace Jones, The Enmore Theatre © Getty Images
Madonna, Re-Invention World Tour © Getty Images
Grace Jones, The Enmore Theatre © Getty Images
Britney Spears, Britney's Onyx Hotel Tour © Getty Images