Details: This poster shows three pictures of young girls a princesses. At the top it says Once Upon a Time¿
Once upon a time is a stock phrase that has been used in some form since at least 1380 (according to the Oxford English Dictionary) in storytelling in the English language, and seems to have become a widely accepted convention for opening oral narratives by around 1600. These are examples of the narrative form, and occur most frequently in the narratives produced by children aged between 6 and 8. It is particularly apparent in fairytales for younger children, where it is almost always the opening line of a tale. The phrase is also frequently used in oral storytelling, such as retellings of myths, fables, and folklore.