World Smile Day is celebrated annually on the first Friday in October
World Smile Day is marked each year on the first Friday in October.The day came into existence thanks to US artist Harvey Ball who famously invented the iconic yellow smiley face back in 1963.
He set up World Smile Day so that everyone could dedicate one day each year to selfless acts of kindness and making others smile.
In honour of the special day, join HELLO! as we take a closer look at some of the smiliest royal tots, from Prince Archie to Lucas Tindall. Keep scrolling for seven photos that are guaranteed to put a smile on your face…