Original: Beyoncé Giselle Knowles ( born September 4 , 1981 ) , best known mononymously as Beyoncé ( ) , is an American singer , songwriter , record producer , dancer , choregrapher , video director , actress and model .
Simplified: Beyoncé Giselle Knowles ( born September 4 , 1981 ) is an American R&B singer and actress .