Beyoncé and Shakira | Beautiful Liar (2007)

It was written by Beyoncé, Amanda Ghost, Ian Dench, and Stargate members Mikkel S. Eriksen and Tor Erik Hermansen, and produced by Stargate and Beyoncé for the deluxe edition of Beyoncé's second solo studio album, B'Day (2006). The mixing of the song was done by Gustavo Celis.

"Beautiful Liar" was released on February 12, 2007, through Columbia Records and Music World Entertainment as the only single from the deluxe edition of the album. A Spanglish mixed version of the song was produced and titled "Bello Embustero".

"Beautiful Liar" is a mid-tempo song; musically, it is a melding of Shakira's Latin and Arabic styles with Beyoncé's contemporary hip hop and R&B styles. Its theme is female empowerment; two female protagonists sing about being charmed by the same man, but instead of fighting over him, both ladies agree that he is not worth their time. The song was well received by music critics, who praised generally Beyoncé's and Shakira's collaboration.

"Beautiful Liar" was nominated for Grammy Award for Best Pop Collaboration with Vocals at the 50th Grammy Awards (2007), while the Spanish version was nominated for Latin Grammy Award for Record of the Year at the Latin Grammy Awards of 2007. It won an Ivor Novello Awards for Best-Selling British Song in 2008.

"Beautiful Liar" was commercially successful. It peaked at number three on the US Billboard Hot 100 chart and experienced the largest upward movement on that chart until 2008. The song peaked at number one in various European countries, including France, Germany, Hungary, Ireland, Italy, the Netherlands, New Zealand, Switzerland, and the United Kingdom.

Its accompanying music video was directed by Jake Nava, incorporates belly dancing moves. "Beautiful Liar" won the MTV Video Music Award for Most Earthshattering Collaboration at the 2007 MTV Video Music Awards. The song was included on Beyoncé's set list during her world tour The Beyoncé Experience (2007).