You can be the best actor in the world but if you don't have that one lucky moment it kind of doesn't matter. There are a lot of amazing actors who will never get the chance to prove themselves because they won't have that one lucky moment.
I have always felt that a woman has the right to treat the subject of her age with ambiguity until perhaps she passes into the realm of over ninety. Then it is better she be candid with herself and with the world.