Sarah "Fergie" Ferguson is one proud mom, and she wants the world to know it.
The Duchess of York recently celebrated Mother's Day in the U.K. (also known as Mothering Sunday). She marked the special occasion by sharing a throwback photo of her two daughters, Princess Beatrice and Princess Eugenie, on Instagram.
She wrote, "I’m so proud of my girls and the beautiful women and mothers they have grown up to be. I feel extremely blessed to call them mine."