Science has yet to figure out how to stop the ageing process and one day or another, we'll all find our first gray hair or wrinkles. Women tend to get a hard deal, particularly if they've gone through the grueling pregnancy process and even super-rich celebrities can only rely on fillers and cosmetic surgery for a limited amount of time.
Here are 15 photos of celebrities that show how they've aged. What do you think? Still looking hot or on a downward spiral?