As of late 2007, Britney Spears has sold over 85 million albums worldwide. On December 11, 2009, Billboard named Spears as one of the best selling acts of the 2000s, solely based on album sales as well as the 8th overall best act of the decade based on album sales, chart success, and cultural relativity. Britney Spears is ranked as the eight best-selling female recording artist in the U.S., having sold more than 32 million copies of her albums and all certified by the Recording Industry Association of America. Britney Spears is currently the fifth best-selling artist act of the decade in the country, as well as the top-selling female album artist.