Kate Middleton and Prince William might welcome another baby after Prince Louis, if the latest odds prove to be accurate.

Many believe that the Duke and Duchess of Cambridge want to have four children. The reports of Prince William and Middleton having another baby intensify following Prince Harry and Meghan Markle's baby announcement.

Bookies Coral have released the latest odds of Prince William and Middleton making a baby announcement from 2-1 to 1-2. There's a 50 percent chance that the royal couple will have a fourth child in 2019.

"Our odds show that there's every chance that Kate and Wills might add to their growing family, and a fourth baby is certainly a possibility," Coral's Harry Aitkenhead said (as quoted by Express).

"We've taken some bets over the last two weeks or so on it happening and there's a real buzz around the Royal family at the moment with Meghan expecting."

A few weeks back, Aitkenhead said the same thing about the odds of Prince William and Middleton’s fourth baby. "Now we’re seeing bets on Prince William and Kate to have a fourth baby and our odds show that we really aren’t ruling out the Duke and Duchess of Cambridge adding to their family," he said.

Ladbrokes spokesman Alex Apati also commented about the issue. For him, it would not be surprising if the Duke and Duchess of Cambridge’s odds of having a fourth baby will be a new interest among royal fans.

"Baby fever is in full swing in the Royal family right now so it's no surprise to see odds on a fourth Will and Kate baby so short," Ladbrokes spokesman Alex Apati said.

However, not everyone is convinced that Prince William and Middleton are still open to welcoming another baby in their brood. One source claimed that the Duchess of Cambridge might be done with it given the difficulties in her first three pregnancies.

"I can't imagine Kate will want any more given the ordeal that she goes through every pregnancy. I should think that three children is enough," an insider told People in 2017. "Carole will be absolutely over the moon. The locals are all very happy for her and the family. Kate is a really lovely girl so we are all very happy for her."

Prince William and Kate Middleton
According to the latest odds, Kate Middleton and Prince William having a fourth baby is "certainly a possibility." Pictured: Prince William and Middleton stand with Bahrain's Crown Prince Salman bin Hamad bin Isa Al Khalifa (2L) during a tour of McLaren Automotive's new Composites Technology Centre in Rotherham, northern England on Nov. 14, 2018. Getty Images/Andrew Yates