Jane Powell – 89
Powell started her training in dancing when she was only two, and in hopes of getting discovered, her parents moved with her to Oakland when she was around five. When that didn’t work out, she started taking singing lessons, and it was through a combination of her singing and dancing that she landed a contract with MGM, and that was where her career officially started. She last appeared on Law & Order: Special Victims Unit, although she did do some stage work after that as well.