I saw her on her first (semi-final), second (close to final) or third (currently final) Farewell Tour, but everytime she looked as good as new.
Cher was so hot, she even gave battleships (multiple) boners, so there!
(Ken, the likely product of the Gregg & Cher gig you saw can be viewed at around 2:35: Mom gives her honey Elijah Blue a barely beclothed butt bump.)
I know that people find her voice divisive, but I think she did well as an actress, too bad she stopped making films, I think she had great one-liners on screen (like when her screen daughter Wynona R. went all devout Catholic in adolescent passion in Mermaids and Cher looks at her sideways and quips: "You do know we're really Jews, right?"). Or in real life, her introduction here alone is priceless: