Taking part in the White Wine Question Time podcast, hosted by Kate Thornton, Princess Eugenie opened up about motherhood and leaning on her sister and "best-friend," Princess Beatrice.
While, like any siblings, the sisters annoy each other on occasion, they have an extremely close bond, Princess Beatrice revealed.
Princess Eugenie dialled in for a chat with Kate Thornton ahead of the return of her own podcast, Floodlight, which highlights the fight against modern slavery through conversations with activists, lawmakers and survivors.
Her Royal Highness - who has two sons, August and Ernest, with her husband, Jack Brooksbank - opened up about her experience of motherhood and her incredible relationship with her family.
In particular, she cherished her close bond with her Grandmother, the late Queen and leans on her sister, Princess Beatrice.
"She's annoying when she wants to be and I'm really annoying to her back, but we love each other, best of friends," Eugenie revealed, while speaking about her older sister. "She's a great mum. I always ring her for nearly everything: 'What do I do about this? What do I do about that?' Same goes for my mum - literally, constant."
Princess Eugenie added that the sisters - who are two years apart and are both raising the next generation of royals - have always relied on each other.
"We're the only ones going through exactly what the other is going through at exactly that time, as a girl. In our family, our place of work, whatever it is," she said. "You go through life knowing exactly what the other one is going through. She's my big sissy. She's a legend."