Back in 1917, King George V (AKA the Queen's grandfather) decided there were too many people known as Prince or Princess, so he chose to limit the number. Louis (pronounced Louie) made his debut on Monday, April 23, in the Lindo Wing of St. Mary's Hospital.
While the eldest of Kate and Wills brood had to return to school on Tuesday morning, Princess Charlotte only had to go to nursery on Thursday morning, which gave her more time to bond with her little brother.
The company also believes there will be a rise in commemorative coins, pushchairs and infant clothing to mark the birth of the second son to the Duke and Duchess.
The birth has also brought some speculation that the Duke of York may remarry his former wife, Sarah, Duchess of York.
Earlier this week, Kensington Palace announced that the Duchess of Cambridge had given birth to a baby boy, the Prince of Cambridge, just after 11 a.m. GMT in London. The baby's "usual address" is the family's home, Kensington Palace.
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According to Time, Prince Louis is expected to generate between £50 million ($70 million) to £91 million ($125 million) for the British economy within the first few weeks of his birth.
"It has been a great honor to register and formally welcome the latest addition to the royal family, Prince Louis Arthur Charles", Gordon said in a statement.
The Duchess has only had two visitors - her two children, Prince George and Princess Charlotte.
However, it is estimated that it will cost Kate and William £727,885 ($1 million) to raise Prince Louis to adulthood.
She said: 'I was so pleased when I heard he was Prince Louis but a bit surprised because I didn't think the name was the top runner'. His middle name Charles, of course, comes from his paternal grandfather, The Prince of Wales.
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