Yes, yes, yes, Madonna looks great at fifty. She's got a series of hot younger men running after her, she's got the moves and she can definitely keep up with her much younger backing dancers despite the fact that you barely see her do more than two steps in a row in her carefully edited videos.
Essentially, Madge is a modern icon who proves that age is no barrier when it comes to looking great/feeling up men in their twenties. However she's forgotten the golden rule of showbiz; a rule that not even the grand doyenne of popular music can ignore. No-one wants to see fifty-year-old-lady gusset. Ever.