Kate Middleton just dropped a subtle hint that she may be expecting another baby. Throughout the past couple of months, rumors have been rife that the Duke and Duchess of Cambridge will have another child.

Bookmakers Ladbrokes previously slashed the odds on the royal couple welcoming their fourth child next year. And they recently revealed that the odds for Middleton to announce her fourth pregnancy before the New Year are at 6/1.

According to New Idea, the Duchess of Cambridge also dropped a subtle clue about her alleged pregnancy. Just last week, the future Queen and her husband attended the Royal Variety Performance at the Palladium.

In the past, Middleton has already attended the same event twice. And during both times, she was pregnant. In 2014, the mom of three arrived at the Royal Variety Performance while sporting a growing baby bump. Shortly after, she welcomed her only daughter, Princess Charlotte.

Two years ago, Middleton once again walked on the red carpet of the event while she was pregnant with Prince Louis. The Duchess of Cambridge gave birth to her third child last year.

Last month, royal fans and experts were also convinced that Middleton was pregnant with her fourth child. During their tour in Pakistan, it was revealed that Middleton and Prince William traveled with a doctor for the first time ever.

Royal correspondent Rebecca English shared the news on her Twitter account, saying that the doctor also happens to be Prince William’s friend from East Anglia Air Ambulance. The involvement of the unnamed doctor during their tour heightened speculations that extra care was given to the Duke of Cambridge’s wife because she’s pregnant.

“She’s pregnant again,” one royal fan tweeted.

“Here come the pregnancy rumors,” another person wrote.

But as of late, no pregnancy announcement has been made regarding the Duchess of Cambridge. And if she is expecting her fourth child, the initial announcement will come from Kensington Palace.