Royal Family
Prince George and Princess Charlotte love doing pizza doughs together. Pictured: Princess Charlotte, Kate Middleton, Prince George and Prince William at a children's party for Military families during the Royal Tour of Canada on Sept. 29, 2016 in Victoria, Canada. Getty Images/Chris Jackson

Kate Middleton shared one activity that Prince George and Princess Charlotte love doing together.

On Thursday, the Duchess of Cambridge attended her final royal engagement prior to the arrival of her third child. During the outing, Middleton spoke with the locals and volunteers about her two children, 4-year-old Prince George and 2-year-old Princess Charlotte, as she helped them prepare a meal for the Commonwealth Big Lunch.

"I've done that with George and Charlotte – making pizza dough. They love it because they can get their hands messy," Middleton told one member, Yolanda from Bolivia, (via Hello!).

Middleton then turned to an interpreter and continued, "I was just saying how I really enjoy making pizza dough with George and Charlotte because they like getting their hands messy."

The Duchess of Cambridge was then asked if she could speak Spanish. Middleton just laughed and said, "Sadly, no." However, unlike the royal mom, her two children apparently know a few Spanish words.

The nanny of Prince William and Princess Charlotte, Maria Teresa Turrion Borrallo, is from Palencia, a city in northern Spain. Borrallo reportedly taught the little royals her native language. In fact, Prince George can count up to 10 in Spanish. Meanwhile, his younger sister is picking up a few words too.

The palace has not confirmed when exactly Middleton's baby is due. However, according to Ringo Starr, the duke told him during his knighting that his wife may give birth "any minute now." This means that the new addition to the family of four will arrive sooner than expected.

Initially, royal fans speculated that the baby may arrive late in April. Some believe that the newest royal will be delivered on St. George's Day. In fact, Bookmaker Ladbrokes have given this date 10/1 odds.

"It would be such a wonderful coincidence if Kate was to give birth on St George's Day, and patriotic punters have forced us to cut the odds on the newest member of the Royal family entering the world on April 23rd," said Jessica Bridge of Ladbrokes.

Meanwhile, others believe that the fifth-in-line to the throne might arrive on Prince William and Middleton's wedding anniversary. The Duke and Duchess of Cambridge will be celebrating their seventh year as a married couple on April 29.