Let's make it clear: the person who came up with the saying, "age is just a number" was most likely under the age of 25. Sure, when we grow older, we become wiser and are filled with everlasting memories we'll cherish for the rest of our lives ... but we'll definitely look it.While there's no escaping from the grasps of crow eyes and smile lines for us common folk, here are 10 celebrities who have magically found the fountain of youth. 1. Jennifer AnistonWeHeartIt / ZimbioWe'd say Rachel Green would be more than proud of Jennifer Aniston's skin care routine.2.