Crystal Gayle is an American country music singer known for her distinctive, silky voice and her long, flowing hair. She is the younger sister of fellow country star Loretta Lynn. She gained fame in the 1970s and is best known for her hit song 'Don't It Make My Brown Eyes Blue,' which won a Grammy Award. Trivia: Crystal was the first woman in country music to achieve a Platinum record for her album 'Crystal Gayle,' released in 1977.