The Duchess of Sussex could dial down any eye-catching looks for the big day.
Anthony added: “In past appearances, Meghan has worn outfits that are colourful, bold and effortless at the same time.
“For this wedding Meghan will potentially dial down on colour to something more demure, such as navy blue or pale pink, to keep out of the spotlight.”
Queen Elizabeth II has attended many major royal weddings over the years.
While many will opt for a demure look not to attract attention, the monarch has been known to wear eye-catching pieces.