Everyone loves a good celebrity sighting story. not only does it make a good tale to tell around the campfire, but it makes us feel as if our heroes and idols are just like us normal people.
What's even better, and increasingly rarer, are those instances where a person meets a celeb but has no idea the interaction has taken place. Have a look below and check out these 15 celebrity encounters from people who genuinely didn't know who they were.