Boy's waistcoat

Trousers had replaced breeches for boys in the 18th century, and derived from those worn by working men such soldiers, sailors, fishermen and farm labourers. Trousers were looser fitting and wider in the leg than breeches, and more practical and comfortable for those who led an active life. The fashion for shorter trousers like these came to the UK from the USA in the 1860s, as part of a suit with a variety of styles of jacket.