How to Make a Top Hat: 12 Steps (with Pictures) - wikiHow
A 5 to 6 in (13 to 15 cm) tall hat may look good on an adult, while a child may look better in a 3 to 4 in (7.6 to 10.2 cm) top hat. 5 Cut out the cardboard rectangles to build the barrel of your hat.
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