History of ballet
Ballet originated in the Renaissance court as an outgrowth of court pageantry in Italy, where aristocratic weddings were lavish celebrations. Tutus, ballet slippers and pointe work were not yet used. The choreography was adapted from court dance steps. Performers dressed in fashions of the times. For women that meant formal gowns that covered their legs to the ankle. Early ballet was participatory, with the audience joining the dance towards the end.
History of ballet
In 1489 Galeazzo, Duke of Milan, married Isabella of Aragon in Tortona. An elaborate dance entertainment was arranged for the celebrations by the Italian dance master Bergonzio di Botta. The dances were linked by a slim narrative concerning Jason and the Argonauts, and each corresponded to a different course for the dinner. Tristano Calco of Milan wrote about the event, and it was considered so impressive, that many similar spectacles were 
organized elsewhere.