"They have a sisterly bond and Sophie is like the older sister Kate never had," royal author and commentator Ingrid Seward told Hello! of the royal duo. Sophie, the Duchess of Edinburgh, married Prince Edward in 1999 and shares two children, Lady Louise and James, the Earl of Wessex, with the Duke of Edinburgh.

Kate Middleton is returning to royal duties carefully and at her own pace after completing preventative chemotherapy following her cancer diagnosis.

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Bridges were also reportedly burned between their wives Kate Middleton and Meghan Markle when the Sussexes exited their royal duties, with royal experts previously saying not even Kate’s cancer diagnosis could repair their "poisonous" dynamic.