In 2001, she released Britney and played the starring role in the film Crossroads. She assumed creative control of her fourth studio album, In the Zone released in 2003, which made her the only female artist of the Nielsen Soundscan era to have her first four albums debut at number one. Her fifth studio album, Blackout was released in 2007. Her sixth studio album, Circus released in 2008, also debuted at number one in the Billboard 200 albums chart.
According to Zomba Label Group and Sony Music, Spears has sold over 85 million records worldwide. She is ranked as the eighth best-selling female recording artist in the U.S. with 32 million copies of her albums certified by the RIAA, and is currently the fifth best-selling artist act of the decade in the country, as well as the top-selling female artist. Spears is also ranked by Forbes 2009 issue as the 13th most powerful celebrity, and with earnings of over $35 million dollars in 2009, the 2nd-highest earning young musician of the year.
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