Anyone who has paid even the slightest bit of attention will be well aware that the Duchess has a royal uniform of sorts. Classic, fitted dresses and occasionally two-piece outfits that are incredibly well-made and fitted to her petite frame. She also favours a slimline clutch purse, often in a matching or complementary colour to her outfit.
And now we know exactly what Prince William's stylish wife is carrying in those sweet purses she never goes anywhere without. According to royal author Marcia Moody who wrote Kate: A Biography, the Duchess always pre-packs her clutch with four distinct items.
The first must-have is a compact mirror. A royal must always look one's best after all and what better way to ensure one does than a quick mirror check.
The next item Kate Middleton always has at hand is lip balm. That way she never has to worry about a sudden bout of chapped lips. The weather can be harsh and unpredictable in the UK let's face it.
Next, 36-year-old Kate is said to always have sheets of blotting paper tucked insider her purse to remove any excess shine to ensure she is always camera ready.
The last essential Kate keeps in her clutch - a handkerchief. No explanation needed for that one.
The one thing you will not find in Kate's clutch however - a mobile phone. Apparently, carrying a mobile phone is against royal protocol - something a woman of Kate's standing would never break.
Her sister-in-law Meghan Markle, however, appeared to be carrying her mobile phone during a visit to Melbourne in October, 2018. The Duchess of Sussex is new to this royal caper though, so we'll let it slide this time. Next time though - we expect her to be carrying the magic four items only.
Otherwise, who knows what the Queen will have to say about it.