Dress them up, dress them down; denim jeans are a wardrobe staple that have withstood the test of time.
These reliable garments have origins dating back to the 16th century, when the city of Genoa in Italy was renowned for manufacturing a cloth made with cotton warp (vertical) and wool weft (horizontal) fibres. Fabric manufacturers in Nîmes, France, tried to replicate this fabric from Gênes (as the French called Genoa) but created a thicker, coarser twill fabric.
The cotton strands for the weft were left white while the warp was dyed with indigo. The weaving technique involved passing the weft under two or more warp strands, producing a diagonally woven fabric which was white on the underside and blue on the surface. The new cloth was called serge de Nîmes, then shortened to de Nîmes, and finally Anglicised to denim.
The sturdy fabric found popularity in the 19th century. Levi Strauss left Germany for America in 1851, opening a dry goods store in San Francisco. He supplied denim around the country including to Jacob W. Davis, a tailor in Nevada. Davis had the idea of making denim trousers with copper rivets fastened at pocket corners and other points under stress, making them sturdier and longer lasting.