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Wikipedia has an interesting in-depth article on the history of the modern cocktail attire for men

The aim is to look professional without being too overdressed

Take the formal edge off by rolling up your sleeves and the hems of your chinos to expose a touch of mankle If your shirt is poking out from under a casual jacket like a bomber, thats one (tolerable) thing

Lightweight, Polyester/Rayon

Style with strappy sandals and minimalist gold jewellery for a chic, effortless look

Our Top Picks 7 Best Black Dress Shoes Outfits For Men Black Dress Loafers with Gray Pants Achieve a refined and polished look by wearing Black dress loafers with gray pants