Princess Eugenie is ringing in Sarah Ferguson's birthday with an Instagram tribute of new photos of her in grandmother mode. Princess Eugenie is mom to sons August and Ernest with husband Jack Brooksbank.

In honour of her mother's big day, Princess Eugenie posted some unseen photos of the Duchess of York, including family snaps with her grandchildren and a mystery shot of one of Fergie's most iconic lo

In one image, Fergie is seen squatting down to hold Ernest’s tiny hands while in a green garden—seemingly inside Eugenie and Jack’s estate. The duchess wears a light blue denim jacket and maxi skirt, with a teal scrunchie holding up her ponytail, and Ernest matches her in a light sweatshirt, blue jeans, and white-and-blue sneakers.

The post, shared with Eugenie's 1.8 million social media followers, also included a never-before-seen picture of Sarah, also known as Fergie by her friends and family, holding the hands of the princess' son Ernest Brooksbank.

Princess Eugenie and her sister, Princess Beatrice, have both kept their kids out of the royal spotlight, but on Tuesday, Oct. 15, Eugenie shared some rare photos of her youngest son, Ernest, to mark a milestone birthday for mom Sarah Ferguson, the Duchess of York.

Prince Andrew's younger daughter Princess Eugenie has sent emotional message to her mother Sarah Ferguson to mark her milestone as the Duchess turn 65.In her tribute, Princess Eugenie posted

Princess Eugenie shared a rare photo of her 1-year-old son Ernest enjoying a sweet moment with "grannie" Sarah Ferguson on Instagram on Tuesday, October 15 as the Duchess of York rang in her birthday.