Afternoon Tea Dress Codes in London Afternoon Tea Expert I get asked what the appropriate dress code is for afternoon tea and I always recommend smart casual at a minimum. Smart casual is polished and put together but comfortable. Wear neat, clean clothing What to Wear to Afternoon Tea High Tea Outfits for All Afternoon Tea Party Attire: Dress Code, Etiquette, Tips & More MY CHIC OBSESSION Afternoon Tea Party Dress