Velvet Sportcoat
Buy It Now at Uniqlo, $60

This is probably one of the few nights you'll get to rock a velvet blazer, so there's no use spending a grip one. Good thing Uniqlo offers up this affordable version in a slim fit. Rock it over a pair of tweed trousers or dark denim, a buttondown, and don't forget to wear a tie. The texture is something that drunk people and lady folks will want to touch all night. Use that to your advantage.