Why do these British royals wear alphabet necklaces? Princess Diana, Meghan Markle and Kate Middleton all favour pendants with initials – especially their children’s

• The Duchess of Sussex is sure to add to her collection of pendants – featuring Prince Harry and son Archie’s initials – once her new baby is born
• Will Princess Eugenie take some style cues from her cousins-in-law and do the same for her new son August with husband Jack Brooksbank?