Nearly 30 landmarks around New Zealand will be lit up pink or blue to mark the birth of the royal baby, due this weekend.
Monarchy New Zealand came up with the illuminating concept and has managed to get loads of landmarks on board, including the Sky Tower and The Cloud in Auckland; Wellington's Majestic Centre lights; Christchurch Airport; and the corrugated iron dog in Tirau.
With the due date looming, the duchess stopped official duties last month while Prince William, a helicopter search-and-rescue pilot and grandson of Queen Elizabeth, is on standby at an air force base in north Wales to rush back to London.
The couple have remained vague about the exact date the baby is due other than to say mid-July and the arrival will be announced in a combination of the traditional and modern - via Twitter, websites and with a notice outside Buckingham Palace.
Officials announced overnight Prince William and Kate Middleton's child will be known by its given name and would have the title His or Her Royal Highness Prince or Princess of Cambridge.