Beyoncé Giselle Knowles

"If I Were a Boy" and "Single Ladies (Put a Ring on It)" were released as the album's first and second lead singles, respectively. The first lead single peaked at number three on the Billboard Hot 100 chart, while the second peaked at number one, and became Knowles' fifth number-one single. "Single Ladies" spent four non-consecutive weeks at the top spot. Its music video has achieved fame for its intricate choreography, which has been credited as having started the "first major dance craze of both the new millennium and the Internet". Knowles revealed that the inspiration for the video was a 1969 Bob Fosse routine entitled "Mexican Breakfast" seen on The Ed Sullivan Show, which featured Fosse's wife, Gwen Verdon, dancing with two other women. This prompted a legion of imitations and parodies from men and women all around the world, including celebrities Justin Timberlake Joe Jonas, Tom Hanks and US President Barack Obama. The music video received nine nominations at the 2009 MTV Video Music Awards and ultimately won the award for Video of the Year and an additional two awards, though its loss in the Best Female Video category to Taylor Swift's "You Belong with Me" led to a controversy during the ceremony.
In December 2008, Knowles starred in the musical biographical film Cadillac Records as blues singer Etta James. She performed James' classic hit "At Last" at The Neighborhood Inaugural Ball of Obama and his wife Michelle's first dance as President and First Lady of the United States on January 20, 2009. "Diva" was released as the third US single from I Am... Sasha Fierce, while "Halo" served as the third international single, and later as the fourth US single. The song peaked at number five on the Billboard Hot 100, and became Knowles' twelfth Hot 100 top-ten single as a solo artist. With this feat, Knowles achieved more top tens on the Hot 100 than any other female artist of the 2000s decade. "Ego" was released as the fifth US single from I Am... Sasha Fierce, and subsequently came up with a remix featuring additional vocals from Kanye West. The song peaked at number 39 on the Billboard Hot 100. "Broken-Hearted Girl" and "Sweet Dreams" became the album's sixth and seventh singles, respectively. In January 2009, Forbes magazine ranked Knowles and Jay-Z as Hollywood's top-earning couple, with a combined total of $162 million. They also made it to the top of the list the following year, with a combined total of $122 million between June 2008 and June 2009. To promote I Am... Sasha Fierce, Knowles embarked on her worldwide I Am... Tour in March 2009. According to Pollstar, the tour earned Knowles $103.2 million for its 97 shows. In April 2009, Knowles starred opposite Ali Larter and Idris Elba in the thriller film, Obsessed. The film grossed $11.1 million on its first day of release, and ended its opening weekend at number one with a total of $28.5 million.
In June 2009, Forbes listed Knowles fourth on its list of the "100 Most Powerful and Influential Celebrities in the World", third on its list of the "Top-Grossing Musicians", and first on the list of "Top Best-Paid Celebs Under 30" with over $87 million in earnings between 2008 and 2009. "Video Phone" was released as the eighth and final single from I Am... Sasha Fierce, with a music video and digital download release taking form of an extended remix, featuring Lady Gaga. Its music video received two nominations at the 2010 BET Awards for Video of the Year and Best Collaboration, winning the former category on June 27, 2010. It also received five nominations at the 2010 MTV Video Music Awards, in the categories of Best Choreography, Best Collaboration, Best Pop Video, Best Female Video and Best Art Direction. At the 52nd Grammy Awards, Knowles received ten nominations, including Album of the Year for I Am... Sasha Fierce, Record of the Year for "Halo", and Song of the Year for "Single Ladies (Put a Ring on It)", among others. She tied with Lauryn Hill for most Grammy nominations in a single year by a female artist. Knowles ultimately set the record for the most Grammy awards won on a single night by a female artist, when she won six awards from her ten nominations; Song of the Year, Best R&B Song and Best Female R&B Vocal Performance for "Single Ladies", Best Female Pop Vocal Performance for "Halo", Best Contemporary R&B Album and Best Traditional R&B Vocal Performance for "At Last".
• 2010–present: New management, 4 and motherhood