Princess Eugenie recently welcomed her first child and she's been getting some important parenting advice from her mother Sarah Ferguson.

Mother-of-two Fergie says she tells her daughters: "Mothers know. Follow your instinct." But this wisdom hit home for Eugenie for a sad reason.

Why Princess Eugenie can "never stop worrying"

Sarah discussed maternal instinct with her daughters after the trio had met with young cancer patients. And, when she was young, Eugenie herself was diagnosed with a health issue — scoliosis.

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Princess Eugenie Can "Never Stop Worrying" For This Sad Reason

The visit with cancer patients and her own experience with scoliosis made Eugenie agree with her mother about when a parent knows something is "not quite right." She added: "You can never stop worrying."

Please watch the video above for more on Princess Eugenie and Sarah Ferguson's parenting talk and looking out for your children.