You know, it can be pretty hard to guess how old celebrities actually are at first glance. They tend to have lived a a healthy enough lifestyle, or just keep themselves in good enough shape, that they generally look a lot younger than the rest of us average Joes. Not only that, but it's even trickier to compare how old certain celebrities are, and unless there's a very clear and obvious age gap, you might assume that they're much closer in age than in reality.
If you need an example of this kind of phenomenon, look no further than the following celebrity couples. Most of these pairings are pretty well-known, and in some cases, they've been together for many years. However, you might not know that there's actually a pretty big age gap there. Scroll down to check out some of the most most famous examples.
1. Michael Douglas and Catherine Zeta-Jones: 25 years
Pretty cool right? But if you enjoyed this list, then why not check out this article we penned all about the 10 celebrities that we can't believe were ever an item. That'll really make you wonder 'what were they thinking?'