Ensconced in their cozy Montecito mansion, the Sussexes are living the American dream. By all accounts, the love is real. But their foray into moguldom has not always been a smooth ride.

Here's what a royal expert says the Duke and Duchess of Sussex should avoid doing so they don't become a complete "laughing stock."

Prince Harry and Meghan Markle have had a string of bombshell claims levelled against them in an article published by US magazine Vanity Fair, including further allegations of the pair being difficult