Britney Spears has been ranked sixth on Billboard's 'Greatest Pop Stars of the 21st Century' list, a position that has sparked significant backlash from her fans, who argue she deserves to be in the top five or even the number one spot. Since her debut in 1999, Spears has been a defining figure in pop music, known for hits like 'Oops!...I Did It Again' and 'Toxic,' and is often referred to as the 'Princess of Pop.' Many fans expressed their disappointment on social media, emphasizing her influence on modern pop artists and claiming she is the 'blueprint' for pop stardom. The list has led to discussions about the rankings of other prominent artists, with fans of Taylor Swift, Beyoncé, and Lady Gaga also vying for the top positions. Ultimately, the debate highlights the ongoing legacy and cultural impact of Spears, who continues to resonate with both fans and the music industry. Billboard's assessment is part of a broader reflection on the evolution of pop music over the last 25 years.