updated 2:56 p.m. ET Aug. 15, 2008

NEW YORK - Sure, Madonna may have scandalized the Vatican and shocked nearly every parent in America at some point during her long and provocative career full of shrewd image transformations.

But as the Material Girl hits the half-century mark this weekend, she may be stepping into a role that even she, with all her marketing savvy, might not have dreamed up: poster child for the 50-and-fabulous set.

Who cares about those recent tabloid headlines linking her to the Yankees’ A-Rod, or that tell-all book by her brother? Many women of a certain age look at Madonna and see a wonderfully fit, stylish, vigorous woman who’s made a fortune based on smarts, talent and ambition — no “Blond Ambition” puns, please — and just keeps on going. Her latest world tour, “Sticky & Sweet,” kicks off in Wales a week after her Aug. 16 birthday.