How old is "too old" to wear a mini if you are in shape?

How old is ”too old” to wear a mini? If you work out, take care of yourself, and look similar to Elle MacPherson 44 http://www.thedailydust.co.uk/wp-content/uploads/2008/11/elle_macpherson_surf.jpg, Terri Hatcher 43 http://www.thedailydust.co.uk/wp-content/uploads/2008/11/terri_hatcher.jpg, and Kim Cattraill 52! http://www.thedailydust.co.uk/wp-content/uploads/2008/11/kim_cattrall.jpg, why couldn’t they rock a mini? I know there will be many who will come out and say they had work done or they are airbrushed, anything to make excuses for the fatties, but it’s all good, it is nice to dream. If you can keep yourself looking hot and stunning past 35 what harm is it wearing a mini? And should you let age or how well your body holds up dictate if a mini makes sense or is good to go?