1956 (said to have been designed c. 1948), from Capri, Italian island; so called perhaps because they were first popular in Capri, which was emerging as a European holiday destination about this time (compare Bermuda shorts).
capote
Cappadocia
cappella
cappuccino
Capri
Capri pants
capriccio
caprice
capricious
Capricorn
caprine