Kate announced her pregnancy in December 2012 and although she has never confirmed a due date, unconfirmed reports had suggested it was 13 July.
That date has come and gone, but according to the latest royal baby reports, it might not have been far off the mark.
During a visit to the Little Harbour Children's Hospice in Porthpean yesterday, the Duchess of Cornwall was overheard saying: "We are all just waiting by the telephone. We are hopeful that by the end of the week he or she will be here."
We're sure plenty of people around the world are hoping for that too!
Kate's last public appearance was at the Trooping of Colour at Buckingham Palace on 15 June. It was recently suggested she's been keeping a low-profile at her parents' home in Berkshire as she awaits the birth of her first child.
Meanwhile, the world's media continue to gather outside the Lindo Wing at the St. Mary's Hospital in Paddington, where Kate will deliver her child.
The palace previously confirmed that Kate and William have chosen not to learn the sex of their child, but has said the new arrival will go by the title Prince or Princess of Cambridge.
Following tradition, the Queen, Prime Minister, senior members of the royal family and the Middleton family will learn of the birth before the public.
We will only find out the sex of the third-in-line to the throne when a royal aide takes the birth notice (signed by the doctors) from the hospital to Buckingham Palace, where it will be displayed in the forecourt.
Kate Middleton's pregnancy in pictures: