Who can tell me how old is Tina Turner?

Yeah yeah yeah... and i'm jeles jeles jeles. Tina Turner is still darned fit and looks great. Did you see her sing "Proud Mary" with Beyonce at The Grammy's. My gawdddd.... those famous legggggggggs, LOL. Okay, so the question now is how old is Tina Turner? All i know of is that my brothers and sisters love to watch her dance and sing when i was a tot. I dont whether i followed Tina Turner dance and sing or not cos we dont have a camera then. But i really do hate it when my sis belts out Tina Turner's "What's Love Got To Do With It" all day long for years on end. And yes, she still sings it at Karaoke, blehhhh....