Princess Eugenie and Jack Brooksbank recently made their first-ever royal pregnancy announcement. Two years after their wedding, they are now about to welcome their child.

For months, speculations continued to emerge that one of the female royals will announce their pregnancy this year. The British royals in the list are the York Princesses -- Eugenie and Beatrice, Kate Middleton, and Meghan Markle.

The odds are high toward the Duchesses of Sussex and Cambridge. Reports recalled that the former actress just gave birth to Archie Harrison last year, while the future Queen Consort reportedly hinted that her husband does not want another child.

But, following Princess Eugenie and Jack Brooksbank's "delightful" royal pregnancy announcement, several publications stated that Princess Beatrice and Kate Middleton might, also, announce theirs soon. Many believe that two more royal babies will arrive in 2021, according to New Idea.

The odds of the eldest York Princess announcing her pregnancy are much lower than the Duchess of Cambridge. The publication noted that she just recently tied the knot with Edoardo Mapelli Mozzi, which increases further the chance of her having a baby soon.

Royal biographer and author Phil Dampier shared his thoughts with the same magazine. He stated that it would not come as a surprise if Bea and Edo announce theirs soon, as well, deeming it as a "royal pregnancy boom."

Dampier continued that the York Princesses might soon share "pregnancy" and "baby tips" with their cousin-in-law, Kate Middleton. He claimed that the Duchess of Cambridge is "hoping" to add another member in their family of five very soon.

The royal author stated that the royal would love to have her baby number four before reaching the age of 40. She would, reportedly, love another girl, noting that it will be "wonderful."

Over the weekends, the Cambridge family went out to meet Sir David Attenborough. The photos that emerged after seemingly sparked royal pregnancy rumors, according to the Daily Express.

The publication said that the future Queen Consort had her hand "pressed" flatly against her stomach. Following the snaps, a body language expert analyzed the photos and stated that she displayed several "signs."

Judi James claimed that her hand on her stomach might be a sign of a new royal pregnancy for the couple. She argued, however, that this movement might, also, mean other things. She added that Kate Middleton's gestures could only be a "signal" that she is standing back, allowing her young Cambridges to enjoy their outing.