Beyoncé Giselle Knowles-Carter (/biˈɒnseɪ/ bee-ON-say; born September 4, 1981) is an American singer, songwriter, and actress. Beyoncé's boundary-pushing artistry and vocals have made her the most influential female musician of the 21st century, according to NPR. Her success has led to her becoming a cultural icon and earning her the nickname "Queen Bey".