Britney is THE Princess of Pop. Other artists such as Rihanna and Miley Cyrus are pop princesses. The term "pop princess" can be thrown around and used for any artist, but the term "Princess of Pop" only applies to Britney.
Jordin's No Air slipped 112-119, selling 10,000, off by 7%, for a total of 2.62 million. One Step at a Time plunged 113-144, selling 9,000, down 15%, for a total of 1.03 million.
Jordin remained on the chart, climbing 199-191 and selling 5,000, up 18%, for a total of 971,000 -- so close...