The “sisterly bond” between Kate Middleton and Sophie, Duchess of Edinburgh was on full display for Remembrance Sunday on Nov. 10, and royal biographer Ingrid Seward said Kate considers Sophie the older sister she never had.

Sisters in style.Sophie, the Duchess of Edinburgh may be a mentor to Kate Middleton in royal duties, but the duchess just took a style cue from the princess by wearing one of Middleton's go-to winter outfit formulas.

Multiple royal experts told Hello! that Sophie is like an 'older sister' to Kate and both of the girls share similar experiences when it comes to the royal family.

But Sophie's warm gesture demonstrated the sisterly closeness between the two royal women, and one which revealed just how much the royals have wrapped a protective arm around sto