"What makes you nervous is that the days leading up to it, they email you a protocol of how you're supposed to greet Prince Harry and Meghan," he told Jimmy on Jimmy Kimmel Live!
He continued: "You're supposed to say, 'Your Royal Highness,' [and] you can't speak until your hands are in a handshake with his."
Meghan received criticism for breaking royal protocol at the premiere when she met Beyoncé.
The Duchess of Sussex sparked a storm of fury from royal commentators for hugging the pop superstar as she met the cast of the movie.
The royal couple embraced Beyoncé and her husband Jay-Z who congratulated them on the birth of their first child baby Archie Harrison after his arrival on May 6, with 37-year-old Beyoncé reportedly telling 37-year-old Meghan: "That baby is so beautiful."
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