You can never go wrong with a tux or that perfect little black dress. You can also opt for contrasts. A casual jacket over a trendy trouser or a solid coloured top with a patterned skirt.
Add a watch and a belt. A shoulder bag/purse to keep all your essentials in one place mainly your phone, makeup and money. Do not overdo it.
Casual shoes or oxfords are a no-brainer. Couple them with colourful, trendy patterned socks. But always remember to match your shoes to your belt. For the ladies, a pair of perfect heels or pumps can work wonders.