Happy Birthday, Cher!. Cherilyn Sarkisian turns 75 years old today. Here are five fun facts about the singer. 1. She actually started her career in television as a child. 2. Mego’s Cher doll was the highest-selling doll of 1976. 3. “Believe” is one of the best-selling singles of all-time. 4. Cher used to go by the stage name Bonnie Jo Mason. 5. She has said the first thing she did when she learned to write was practice her autograph. Happy Birthday, Cher!