Giovanna Fletcher interviewed the royal on her 'Happy Mum, Happy Baby' podcast earlier this year.
Kate has said she want the early years to be on par with other great social challenges.
Elizabeth Emanuel is selling sketches of the dresses she helped design for the royal.
The Duchess of Sussex's 'honesty and openness send a powerful message to anyone who loses a baby: this may feel incredibly lonely, but you are not alone.'
The royal is said to be moving into her cousin's former home in Windsor as she and husband Jack Brooksbank prepare for their new baby.
The Duke of Cambridge was relieved when one of them recognised him.