Cher takes a promotional photo for "The Sonny and Cher Comedy Hour" in 1972. See more photos of the iconic singer and actress, who turns 70 years old on Friday, May 20. CBS Photo Archive/Getty Images

Cher, who was born Cherilyn Sarkisian in 1946, became a household name in the 1960s. She and her husband, Sonny Bono, had a No. 1 song with "I Got You, Babe." The two divorced in 1975 but would still work together on television. Courtesy Everett Collection

Throughout her career, Cher has always been known for her flamboyant fashion. Here, she wears a feathered headdress for "The Sonny and Cher Comedy Hour" in 1972. CBS Photo Archive/Getty Images

Cher wears an Asian-styled headdress and a sleeveless satin top for her show in 1972. CBS Photo Archive/Getty Images

Cher sings in a cloud of fog during her show in 1972. CBS Photo Archive/Getty Images

In 1974, Cher performs as ringmaster on the opening day of the Ringling Bros. Circus in Inglewood, California. Michael Ochs Archives/Getty Images

Cher, in character for her show, tours Liberace's mansion in 1974. Michael Ochs Archives/Getty Images

During her career, Cher has won an Academy Award, a Grammy Award and an Emmy Award. Ron Galella/WireImage/Getty Images

Cher models Bob Mackie fashion in 1978. Harry Langdon/Getty Images

Cher wears another Bob Mackie creation in 1978. Harry Langdon/Getty Images

Cher poses for the cover of her album "Prisoner" in 1979. Harry Langdon/Getty Images

Cher poses during a photo shoot in 1984. Harry Langdon/Getty Images

Between 1965 and 1999, Cher had five No. 1 hits -- four as a solo artist and one with Sonny Bono. Ron Galella/WireImage/Getty Images

Cher attends the Academy Awards in 1986. In 1988, she won the best actress Oscar for her role in "Moonstruck." Other films she has starred in include "Mask," "Silkwood" and "The Witches of Eastwick." Julian Wasser/Hulton Archive/Getty Images

Cher poses with actor Bob Hoskins to promote their 1990 film "Mermaids." Courtesy Everett Collection

Cher and her son Elijah Blue Allman attend the Academy Awards together in 1998. Allman is the son of musician Gregg Allman, who Cher was married to from 1975-1979. Cher also has a son, Chaz, from her marriage to Sonny Bono. Mirek Towski/The LIFE Picture Collection/Getty Images

At the turn of the century, Cher's "Believe" won a Grammy Award for best dance recording. Peter Still/Redferns/Getty Images

Cher performs in 2005 during "Living Proof: The Farewell Tour." Tim Mosenfelder/Getty Images

Cher speaks on stage at the 2010 MTV Video Music Awards. Jeff Kravitz/FilmMagic/Getty Images

Cher performs during her "Dressed To Kill Tour" in 2014. Gilbert Carrasquillo/Getty Images