AceShowbiz - The British Royal Family is soon welcoming a new addition of member when Meghan Markle gives birth to her and Prince Harry's first child. And it seems like, it will not be long until another royal baby arrives as Kate Middleton is said to be getting serious baby fever from it.

The Duchess of Cambrigde is reportedly wanting to have a fourth children with husband Prince William. "Catherine would like another baby," a friend of the mother of three said to Daily Mail.

"She loves children and is prepared to put herself through another pregnancy even though they have been complicated by severe morning sickness in the past," added the pal.

Kate and William are already parents to three children, Prince George, Prince Charlotte and Prince Louis. The latter of which just turned one on April 23. His aunt and uncle, Meghan and Prince Harry, were among those who celebrated the baby boy's birthday by leaving a sweet message on Kensington Palace's post.

Responding to the adorable pictures of Prince Louis which were taken by Kate, Meghan and Prince Harry said through their joint account, "Happy Birthday Louis! Sending lots of love from both of us. xo." The soon-to-be parents also added an emoji of birthday cake and a balloon.

Meghan is expected to give birth to her first child anytime soon. The former "Suits" star, who has moved at their new home at Frogmore Cottage in Windsor Castle alongside her husband, has been MIA in the past few weeks. Some reports suspected that the Duchess of Sussex had given birth and is keeping the birth and details about it under wrap.

Meanwhile, another report suggests that Meghan's due date is somewhere before May 7. Prince Charles and Camilla, Duchess of Cornwall, were previously announced to head for Germany on May 7 for a three-day tour. Charles and Camilla are expected to accompany the young couple when Meghan gives birth, so it is assumed that the baby will arrive prior to their departure.