Oops she did it again !

Months after her Las Vegas marriage, Spears embarked on The Onyx Hotel Tour, which was canceled in June, after Spears injured her knee during the filming of the video for the single "Outrageous".^[78] The tour's choreography generated much controversy and criticism, with the presence of young children in the audience.^[79] She then became involved in the Kabbalah Centre in September 2004 through her friendship with Madonna.^[80] However, she publicly left the religion in 2006, stating on her website, "I no longer study Kabbalah, my baby is my religion."^[81]

More controversy arose when Spears declared that she would "remain a virgin until marriage".^{britney spears porno pics class="reference">[31]} This pledge has been questioned due to her apparently sexual relationship with fellow pop singer Justin Timberlake.^[32][33]

November 2004 saw the release of her first greatest hits collection, Greatest Hits: My Prerogative, which features all of Spears's singles with the exception of "From The Bottom Of My Broken Heart". It also featured three previously unreleased songs, them being a cover version of American R&B singer Bobby Brown's 1988 hit "My Prerogative", "Do Somethin'", produced by Bloodshy and Avant, whom she had worked with on In The Zone, and "I've Just Begun (Havin' www.briney spears.com My Fun)", which was a song recorded for Spears's fourth album, In The Zone, but did not make the final cut.^[86] By the end of that year, Spears had become one of the best-selling artists in the world.