She added that "Wolfie, August, Ernie and Sienna will be over the moon to have the fifth member of the five aside! 💜," referring to Princess Beatrice's 8-year-old stepson, Wolfie—whom she co-parents with husband Edoardo Mapelli Mozzi—and Princess Eugenie's two children August, 3, and Ernest, 1.

Sarah Ferguson has taken to social media to gush over news that her daughter Princess Beatrice is expecting her second child

Following the announcement of her daughter Princess Beatrice's pregnancy Sarah Ferguson released a new photo of her granddaughter Sienna alongside a congratulatory message celebrating the upcoming new baby to the family.

Sarah Ferguson is looking forward to welcoming another grandchild! Hours after her daughter Princess Beatrice 's pregnancy was announced, the proud mom shared her joy in a statement on her personal Instagram.

The Duchess of York shared a statement about her "happiness" at the news that her daughter is expecting another child.

Prince Andrew and Sarah Ferguson's daughters share a tight bond Princess Eugenie is shouting out her sister Princess Beatrice’s podcast debut to discuss a cause close to heart. On Tuesday, Eugenie recapped her elder sister’s appearance on the latest episode of the Lessons In Dyslexic Thinking podcast with a supportive post on her Instagram Story.

Princess Eugenie is looking forward to becoming an aunt again! Princess Beatrice's younger sister reacted to her pregnancy news with a sweet post on Instagram. See it here.

"So looking forward to more on this journey of motherhood together," Princess Eugenie wrote in the congratulatory post