This pairing of an orange sweater vest and white dress pants comes in useful when you need to look like a British gentleman. If you don't want to go all out formal, throw brogues in the mix.
Orange Sweater Vest with Brogues Outfits
Solid proof that an orange sweater vest and khaki dress pants look amazing when paired together in a classy look for a modern gentleman. Introduce a pair of brogues to the mix to give a sense of stylish casualness to this getup.