Kate Middleton is not expecting her fourth child with Prince William just yet. But bookmakers are convinced that an announcement will be made before the year ends.

On Saturday, the Duchess of Cambridge attended the christening of Prince Harry and Meghan Markle’s son, Archie Harrison, at Queen Elizabeth II’s private chapel in Windsor. Bookies claimed that Kate must have felt broody after seeing the Duke and Duchess of Sussex’s adorable 2-month-old son.

Bookmaker Coral slashed the odds of the Duke and Duchess of Cambridge announcing Kate’s fourth pregnancy this year. Coral Aitkenhead, the spokesperson for Coral, previously said that the announcement will be made within the next 18 months or so.

Earlier this year, the mom of three hinted on the possibility of having another baby after meeting 5-month-old James Barr during her tour of Northern Ireland. Prince William’s wife told the baby’s father that his son makes her feel broody because James is so gorgeous.

“Privately, the Duchess has indicated that she would like to add another child to her brood,” a source told Daily Mail two months ago. However, there is also a possibility that Prince William and Kate are already contented with having three children.

Princess Charlotte, Prince George and Kate Middleton Catherine, Duchess of Cambridge; Prince George of Cambridge; and Princess Charlotte of Cambridge attend the Maserati Royal Charity Polo Trophy at Beaufort Park on June 10, 2018, in Gloucester, England. Samir Hussein/WireImage/Getty Image

Kate just gave birth to Prince Louis on April 23, 2018. Her eldest son, Prince George, was born in 2013, and her only daughter, Princess Charlotte, was born in 2015.

While speaking with Express, Victoria Jennings, a parenting expert, said that there’s one tell-tale sign that suggests that Kate won’t have more kids. She said that the way the royal interacts with Prince Louis is a very obvious indication.

“As a mom of three, I completely understand how it looks as if Prince Louis is Kate Middleton’s favorite child,” she said. “As a parent, things go by in a flash and so you want to nurture the youngest child for as long as possible; this was certainly the case with me and my youngest daughter. You just want to baby the third child for as long as possible, especially if you’re thinking they will be your last,” she added.

Prince William, Kate Middleton and Prince Louis Prince William, Duke of Cambridge, and Catherine, Duchess of Cambridge leave the Lindo Wing of St Mary's Hospital with their new born baby boy on April 23, 2018, in London, England. Chris J Ratcliffe/Getty Images