prince william and kate middleton have a new niece!

Prince William and Kate Middleton Have A New Niece!

Kate Middleton and Prince William are over the moon about a new addition to the family!

The couple are “overjoyed” by Kate’s younger sister, Pippa Mathews‘ second child, Grace Elizabeth Jane.

A source close to the couple shared how “The Duke and Duchess are absolutely overjoyed by the happy news.”

“Grace Elizabeth Jane was born around 4.22 a.m. this morning, weighing 6lbs, 7oz. Mother and baby are doing well,” a family source tells PEOPLE.

“She’s perfect, everyone is overjoyed at such a happy arrival,” the source adds.

prince william and kate middleton have a new niece!
Image via Shutterstock

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Pippa and James Matthews’ newborn daughter shares a middle name with her aunt Kate, who was born Catherine Elizabeth Middleton.

Pippa, 37, and James, 45, welcomed their first child in Oct. 2018.

Pippa birthed her daughter in the Lindo Wing of St. Mary’s Hospital, the same hospital where Kate and Prince William had all three of their children.

RELATED: Pippa Middleton is Pregnant with Baby Number 2

Their baby girl is the fifth grandchild for Carole and Michael Middleton and a little cousin for Prince George, 7, Princess Charlotte, 5, and Prince Louis, 2.

Carole recently described herself as an active influence in her grandchildren’s lives and hopes she will continue to be.

“I want to run down the hills, climb the trees and go through the tunnel at the playground,” she says. “I cook with them, I muck around dancing, we go on bike rides.”

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