Aunt Meghan Markle and Uncle Prince Harry will be on hand to dote on the royal baby when the prince or princess arrives.
The couple are neighbours of the Duke and Duchess of Cambridge at Kensington Palace, living in Nottingham Cottage in the grounds of the royal residence.
US star Ms Markle recently hinted at having her own children with Harry.
“I can’t wait to start a family, but in due time,” she said.
Harry has also openly confessed he would love to have children.
“You know, I think one step at a time, and hopefully we’ll start a family in the near future,” the prince said.
Like Harry, Ms Markle has impressed onlookers with her affectionate nature when meeting youngsters on royal walkabouts.
#MeghanMarkle hugs a schoolgirl at Millennium Point in #Birmingham pic.twitter.com/MwtqgVsFcv
— PA Royal Reporters (@PARoyal) March 8, 2018
In Birmingham on International Women’s Day, Ms Markle hugged 10-year-old Sophie Richards, telling her she could achieve whatever she wanted to achieve, after learning the schoolgirl wanted to become an actress.
Ms Markle has also been spending time getting to know William and Kate’s eldest children, Prince George and Princess Charlotte.
The celebrity, who shot to fame playing paralegal Rachel Zane in the American drama Suits, already has two “fairy god-daughters”.
She described the children of her close friend Benita Litt as such in a 2016 post on her since-deleted Instagram account.
The bride-to-be and Harry, who will wed in Windsor on May 19, will be among close family expected to attend the christening of William and Kate’s baby in a few months time.
