This street-style look has got alternative Christmas going-out outfit written all over it. Picture this: it's a Thursday night, you've got after-work drinks and your crisp white shirt and smart trouser combination is crying out for a little something to pep things up. Cue a structured short-sleeved top. Layered over your shirt (along with a little help from some knockout silver accessories), your 9-5 outfit suddenly becomes a seriously steezy get-up. Simple!