Which of these singers is nicknamed the Princess of Pop?

Britney Spears (born December 2, 1981) is an American singer. Often referred to as the "Princess of Pop," she is credited with influencing the revival of teen pop during the late 1990s and early 2000s. Spears has sold about 150 million records worldwide, including over 70 million in the United States, making her one of the world's best-selling music artists. She has earned numerous awards and accolades, including a Grammy Award, 15 Guinness World Records, six MTV Video Music Awards, seven Billboard Music Awards (including the Millennium Award), the inaugural Radio Disney Icon Award, and a star on the Hollywood Walk of Fame. Her heavily choreographed videos earned her the Michael Jackson Video Vanguard Award.

Source: Wikipedia