 Who's celebrating birthdays? Well, happy birthday to Kelly Pickler, 38, the country singer turned reality TV star. Elon Musk is 53, Tesla and SpaceX CEO. He's worth $221 billion at the latest count. John Cusack, 58, Jones' younger brother and the star of the unsung comedy classic Better Off Dead. John Elway, 64, former Broncos legend. Well, as a quarterback now, I think he runs the team.