Royal Baby Mania Hits London! How Brits Are Celebrating the New Princess

Prince William and Kate Middleton
Brits are pulling out all the stops in London for the birth of Prince William and Kate Middleton's little princess Max Mumby/Indigo/Getty Images

Break out the bubbly and raise a glass to England's newest little princess! Royal baby mania officially hit London on Saturday, May 2, when Duchess of Cambridge Kate Middleton welcomed her second child with Prince William — a daughter named Charlotte Elizabeth Diana!

PHOTOS: Meet the Princess of Cambridge!

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Brits are pulling out all the stops to commemorate the birth of Prince George's younger sister, who is now fourth in line to the British throne. (Only Prince Charles, Prince William, and Prince George are ahead of her.)

Below, see some of the many ways in which England is celebrating the latest addition to its royal family.

PHOTOS: Prince George's baby album

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The Mall in St. James' Park has been lined with Union Jacks, and a larger Union Jack will fly at Buckingham Palace today.

The bells of Westminster Abbey will peal to the sounds of "Cambridge Surprise Royal" at 2 p.m. on Monday, May 4, to mark the new arrival.

PHOTOS: The Duke and Duchess as kids

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Certain landmarks in Westminster, including the Tower Bridge, will be turning pink tonight, May 2. The BT Tower, meanwhile, will feature the words "It's a Girl" written in pink around the top level.

Millions of items of post in the UK will feature a special postmark marking the birth of the royal baby. The postmark on Royal Mail items delivered May 5 will say: "Congratulations TRH The Duke and Duchess of Cambridge on the birth of their daughter." 

PHOTOS: Princes William and Harry through the years

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Us Weekly is on the scene outside St. Mary’s Hospital in London — check out the exclusive royal baby livestream and check back often for ongoing updates on all things royal baby!

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