Hard to believe, but "Barbarella" star Jane Fonda turns 74-years-old today!
Despite her age, the sexy septuagenarian and fitness guru still looks incredible -- stepping out on the red carpet recently in a sleek Catwoman-esque outfit our grandmas would never touch ... and even slipping back into her spandex for a new workout DVD.
Of course, Jane's had a little help in the maintainence department, admitting to TODAY earlier this month that she had work done on her chin, neck and under the eyes.
"I just decided I wanted to buy myself some time and look more like how I feel,” she said at the time.
Fonda isn't the only one in her 50s, 60s or 70s who still looks remarkably good though -- check out the gallery above for more age-defying beauties!
