Popsugar Celebrity The Royals See Kate Middleton's 40th Birthday Portraits The Duchess of Cambridge Pays Tribute to Princess Diana With Glamorous New Birthday Portraits 9 January 2022 by Princess Gabbara View On One Page Photo 1 of 3 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Previous Next Start Slideshow The RoyalsCelebrity BirthdaysKate Middleton