How To Know What To Wear To A Traditional Ultra-Formal Daytime Wedding

What should I wear for a traditional ultra-formal daytime wedding?

For traditional, formal daytime wedding , it is customary to wear morning dress. And this consists of: cutaway coat, formal ascot or cravat, wing tip collar, a vest and usually stripe trousers. It is also customary for all the other members of the bridal party to wear similar attire.