Kate Middleton and Prince William are expected to announce their fourth baby soon.

Many believe that the Duke and Duchess of Cambridge will add a new baby to their brood, it’s just a matter of when. According to Kat Hopps of Express, the announcement might happen real soon.

“Considering Kate has had her three children in closer succession, a baby announcement is much more likely to be sooner rather than later,” Hopps wrote.

Betfair is offering odds of 7/2 for Prince William and Middleton to announce a fourth child. According to Betfair spokeswoman Katie Baylis, the biggest story at the moment is Prince Harry and Meghan Markle’s son Archie and the arrival of the new baby might have gotten the Duke and Duchess of Cambridge feeling broody again.

“The Duke and Duchess of Cambridge have warmly welcomed the new arrival and now there is speculation that the little royal may have got the couple feeling broody again,” Baylis said.

“We make it 7/2 that Kate and William will have a fourth baby which would excite royal fans who can’t get enough of royal babies.”

Alex Apati of Ladbrokes shares the same opinion. After Prince William and Middleton’s visit to baby Archie, they slashed the odds of the couple making a baby announcement from 6/4 to 5/2, saying that more royal babies could soon be joining the palace.

On the other hand, Ladbrokes has odds of 4/9 on Princess Eugenie announcing pregnancy followed by Middleton at 2/1. In March, the odds of Princess Eugenie giving birth this year have been slashed to 1/4.

There are rumors that Princess Eugenie is already pregnant, but the palace has not confirmed the speculations. On Maundy Thursday, Princess Eugenie joined Queen Elizabeth II in an engagement. She got tongues wagging as she was photographed with what looked like a baby bump underneath her floral Erdem dress.

After that appearance, Princess Eugenie skipped the royals’ reunion on Easter Sunday, which also happened to be the Queen’s birthday. Princess Eugenie also missed Lady Gabriella’s wedding on Saturday. She was the only York family member who didn’t make it to the event because Prince Andrew, Sarah Ferguson and Princess Beatrice were all present.