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 How to Dress for High Tea: Style Guide & Dress Code Essentials Blue Zone Planet Winter High Tea Outfit What to Wear to Afternoon Tea High Tea Outfits for All Afternoon Tea Dress Codes in London Afternoon Tea Expert How to Dress for Afternoon High Tea: a Traveler's Guide