Britain's Duke and Duchess of Cambridge have normal holidays.

Britain's Duke and Duchess of Cambridge

Britain's Duke and Duchess of Cambridge

A Beverly Hills designer - who created Kim Kardashian West's wedding earrings - met the Duchess Catherine and Prince William, while also holidaying in a resort on the island of Mustique in the Caribbean and was amazed how they were "human like everybody else, dressing to fit in".

Martin Katz told People magazine: "They were lovely and they couldn't be more present.

"I think what struck me was that they were human like everybody else, dressing to fit in like everybody else."

He also noticed that Catherine wasn't wearing makeup and "looked lovely" and would talk to anyone who wanted to speak with her.

He said: "Kate looked very casual, she wasn't particularly wearing makeup, she looked lovely.

"She just couldn't be more gracious and talked to everybody who would talk to her. It wasn't like she was working the room, but if someone wanted to speak to her, she was happy to speak."

The designer also revealed an embarrassing moment, when he spilled his drink over the Prince's feet, who was wearing flip-flops.

He recalled: "While I was talking, I was holding a glass of fruit punch and it slipped from my hand and crashed to the floor and sprayed all over the Prince's feet. He was in flip-flops."

However, William cracked a joke.

He added: "I was mortified of course, but all I heard was, 'That was quite refreshing, thank you'."