The cap and bells is a type of fool's cap with bells worn by a court fool or jester.^[1] The bells were also added to the dangling sleeves and announced the appearance of the jester.^[2][3]

The cap and bells could be in the following forms:^[2]

• Ass' ears and an ass' tail, often curling forward^[2][3]
• Horns^[2]
• Cockscomb crest^[2]
• Royal court jester costume
• Bi-color coxcomb cap
• Fool's cap and masque

Other forms of fool's cap in England were shaped like a monk's cowl with ass's ears, a high-pointed cap covered with bells, or a round cap with an imposing feather.^{[4][unreliable source?]}

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  Fool's Cap Map of the World
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  A jester with a cap and bells and a fool's scepter
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  Fool's cap of the Carnival (Fasching) Guild in Villach, Carinthia, Austria
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  Carnival in Villach
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  Woman wearing a fool's cap of the Carnival Guild in Villach
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  Supporter of the Belgian national football team in Belgium, before their 2018 World Cup semi-final match against France
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  The Eulenspiegelbrunnen [de], a fountain in Magdeburg, Germany, depicting Till Eulenspiegel