program. [ 199 ] Discography Main articles: Britney Spears discography and Britney Spears videography ...Baby One More Time (1999) Oops!... I Did It Again (2000) Britney (2001) In the Zone (2003) Blackout (2007) Circus (2008) Femme Fatale (2011) Tours Main article: List of Britney Spears concert tours ...Baby One More Time