There are so many 1D fans of all ages and some are even older than the boys themselves. They reach so many different audiences with their amazing music and they have fans from all over the age spectrum. It’s no wonder that they’re the most famous boyband in the world!
See if we can guess your exact age based on your favourite 1D songs with this quiz! Be sure to let us know how well we do by tweeting us over at @maximumpop.