Did The Royal Navy Just Win The Royal Baby Tributes?
Sailors spell out the word 'sister' on deck of warship...
While celebs, friends and the general public have been taking to social media to congratulate Kate and Wills on the birth of their second child, sailors on HMS Lancaster made a bit more of an effort.
Crew members took to the deck of the ship, known as the "Queen's frigate" to spell out the word "sister" - which was then snapped from the air by a comrade in the ship's helicopter.
— Royal Navy (@RoyalNavy) May 2, 2015
Other high-profile congratulations have been issued via the BT Tower - which had the words "It's a girl" displayed high above London - and Tower Bridge in the capital is set to be illuminated in pink this evening.
Meanwhile Cheryl Fernandez-Versini has been among the celebs offering their best wishes.
She tweeted: "Congratulations William and Kate. So excited to see our new little princess!! #itsagirl."
Congratulations William and Kate. So excited to see our new little princess!! #itsagirl
— Cheryl (@CherylOfficial) May 2, 2015
While David Beckham - who shares a birthday with the newborn - commented: "Incredible news. I couldn't be happier for William and Kate. Happy to hear that mother and daughter are fine. It's not a bad day to be born"
Stacey Solomon wrote: "A baby girl !! Yay !! Amazing, Another princess in the world! Woo! #Princess #RoyalBaby #WellDoneKate #CongratulationsWillsAndKate"
And Jonathan Ross pre-empted criticism from those who would prefer to abolish the Royal Family.
He wrote: "#royalbaby yay! Makes me happy. Republicans need not respond."
The only tribute that we reckon could rival the Navy's effort is a super-cute picture shared by Lego showing the royal couple (and Prince George) with their new arrival - in Lego form.