More than just a month after the Duchess of Cambridge and Prince William announced that they are happily expecting, the Kensington Palace revealed when Baby No. 3 will arrive, putting predictions of fans to a halt. 

The Kensington Palace said last Oct. 17, Tuesday, on Twitter that "The Duke and Duchess of Cambridge are delighted to confirm they are expecting a baby in April 2018," though there was no mention of a specific date. This confirms fan predictions, which were calculated based on the date of the pregnancy announcement.

The pregnancy news came on Sept. 4, and the palace then added that Middleton was experiencing severe morning sickness. Her condition, also called Hyperemesis Gravidarum, was cited as the reason why she was missing in events.The pregnancy update had since broken the internet.

The couple was also set for an official trip to Norway and Sweden in November, but it was moved to early 2018, possibly because of the morning sickness the Duchess had been reportedly experiencing. The Sun also reported that the Duke tried giving home remedy to his wife. The 35-year-old prince supposedly tried feeding Middleton ginger biscuits to relieve her sickness but to no avail.

Now that the date of the arrival of the baby was revealed, fans have moved on to guessing the sex of the baby. Some are saying that the baby will be a boy, based on Middleton's choice of clothes. The Duchess wore a blue dress at the World Mental Health Day reception at the Buckingham Palace.

Fans were quick to noted Middleton's fashion preferences. Many have since concluded that the mother of Prince George, 4, and Princess Charlotte, 2, will be having another son because of the color of her dress. This was the first official public appearance of the royal couple since their pregnancy announcement. The new royal baby will leave Prince Harry, the brother of Prince William, sixth in line to the throne.