In 2001, she released her third studio album Britney and expanded her brand, playing the starring role in the film Crossroads. She assumed creative control of her fourth studio album, In the Zone released in 2003, which yielded chart-topping singles "Me Against the Music", "Toxic" and "Everytime". After the release of two compilation albums, Spears experienced personal struggles and career went under hiatus. Her fifth studio album, Blackout, was released in 2007 and despite receiving little promotion, it spawned hits "Gimme More" and "Piece of Me". In 2008, her erratic behaviour and hospitalizations caused her to be placed in a conservators. The same year, her sixth studio album Circus was released, with the global chart-topping lead single "Womanizer". After embarking on The Circus Starring Britney Spears, she released greatest hits The Singles Collection, which featured U.S. and Canadian number-one single "3".Spears has sold more than 100 million records worldwide, becoming one of the best-selling music artists. According to the Recording Industry ociation of America (RIAA), she is the eighth top-selling female artist in the United States, with 32 million certified albums. Spears is also recognized as the best-selling female artist of the 2000s, as well as the fifth overall. She was ranked the 8th Artist of the 2000–10 decade by Billboard. In June 2010, Spears was ranked sixth on Forbes list of the 100 Most Powerful and Influential celebrities in the world; she is also ranked as the third most powerful musician in the world.