The Steampunk look is a mashup of historical style - Victorian and Edwardian fashion, knickers and pork pie hats from the Jazz age - with a smattering of Goth and some attitude thrown in!
Accessorize with lace fingerless gloves, and stockings (for the (ladies) timepieces, WWI gas masks, monacles, googles, spats, gears and similar mechanical and industrial motifs.