Britney Jean Spears

Her sixth studio album Circus, was released in December 2008. It received positive reviews from critics; according to the music review aggregation of Metacritic, it garnered an average score of 64/100. Circus debuted at number one in Canada, Czech Republic and the United States, and inside the top in many European nations. In the United States, Spears became the youngest female artist to have five albums debut at number one, earning a place in the Guinness Book of World Records. She also became the only act in the Soundscan era to have four albums debut with 500,000 or more copies sold. Circus became one of the fastest-selling albums of the year, and has sold 4 million copies worldwide. Its lead single, "Womanizer", became her first number one in the Billboard Hot 100 since "...Baby One More Time" and topped the charts in countries such as Belgium, Canada, Denmark, Finland, France, Norway and Sweden. It was also nominated for a Grammy in the category of Best Dance Recording. In January 2009, Spears and her father James obtained a restraining order against her former manager Sam Lufti, ex-boyfriend Adnan Ghalib and attorney Jon Eardley—all of whom, court documents claim, had been conspiring to gain control of Spears's affairs. The restraining order forbids Lutfi and Ghalib from contacting Spears or coming within 250 yards of her, her property or family members. Spears embarked on The Circus Starring Britney Spears in March 2009. With a gross of U.S. $131.8 million, it became the fifth highest grossing tour of the year.
She released her second greatest hits album, The Singles Collection in November 2009. "3" became her third number one single in the US, and was the first song to debut at the top of the charts in three years. Later that month, she released an application for iPhone and iPod Touch titled "It's Britney!". In May 2010, Spears's representatives confirmed she was dating her agent Jason Trawick, and that they had decided to end their professional relationship to focus on their personal relationship. Spears designed a limited edition clothing line for Candie's, which was released in stores in July 2010. On September 28, 2010, she made a cameo appearance on a Spears-themed tribute episode of American TV show Glee, titled "Britney/Brittany". Spears approved of the episode, although her appearances received mixed reviews from critics. The episode drew Glee's second largest audience, as well as the show's highest ratings ever.
• 2011–present: Femme Fatale
In March 2011, Spears released her seventh studio album Femme Fatale. Max Martin and Dr. Luke executive produced the album and the album's first single "Hold It Against Me". The single debuted at number-one on the Billboard Hot 100. This gave Spears her fourth number-one single on the chart, and made her only the second artist in history to have two consecutive singles debut at number-one, after Mariah Carey. The album peaked at number one in the United States (selling 276,000 copies), Canada, and Australia, and peaked inside the top ten on nearly every other chart. The album's peak in the United States ties Britney with Mariah Carey and Janet Jackson for the third-most number ones among women. Femme Fatale has sold over 590,000 copies in the United States and has been certified platinum by the RIAA. The album received positive critical reviews after its release, receiving a score of 67 on Metacritic, her highest critical score since Oops!... I Did It Again, with many critics naming the album one of Spears's best. In April 2011, Spears appeared in a remix to the song "S&M" by Rihanna after Rihanna asked her fans via Twitter who they wanted her to collaborate with. The song reached number one in the US in mid-April 2011, giving Britney her fifth number one on the chart. In early May, Spears' second single from Femme Fatale, "Till The World Ends", reached number three on the Billboard Hot 100 and had ninety-eight million audience impressions on the Billboard chart, granting Spears the highest weekly audience of her 13-year chart career.