As the big day approaches, guests who are invited to Prince Harry and Meghan Markle’s wedding are starting to receive their invitations. In true royal fashion, the invitations are printed with gold ink and lavish typography. Not sure what to wear to a royal wedding? Fear not. The invitations include the appropriate dress code. Men are instructed to wear a uniform, morning coat, or lounge suit, and women are advised to wear a day dress with a hat.