The Duke and Duchess of Cambridge have finally announced name of their third child!
It's official - the new royal baby's name has finally been revealed!
The announcement was made on Kensington Palace's official Twitter account, where they revealed the baby name they picked is Louis Arthur Charles.
The tweet said: 'The Duke and Duchess of Cambridge are delighted to announce that they have named their son Louis Arthur Charles. The baby will be known as His Royal Highness Prince Louis of Cambridge.'
According to BabyCentre Louis is of German origin and is the French form of 'Ludwig' which translates to 'famous warrior'.
Louis is also one of Prince George's middle names so Kate and William have paid a sweet tribute to the newborn's older brother.
The name has even more family meaning as not only is it one of William's middle names, it also draws a connection to great-grandfather Prince Phillip, whose uncle was Louis Mountbatten.
Arthur is also one of William's middle names and Charles is of course the name of Louis's grandfather. Uncle Prince Harry, who is set to wed Meghan Markle next month, also has Charles as a middle name.
The new royal baby was born on Monday, a few hours after Kensington Palace officially announced Kate had been admitted to hospital in the early stages of labour.
Just after 11am, Prince George and Princess Charlotte's little baby brother was born at the Lindo Wing. Shortly after he received a special visit from his older brother and sister, who melted hearts all over the world.
Before we knew his name we did get to see how adorable he looked when Wills and Kate left the hospital to go home.
Expecting a little one? Check out the best royal baby names
When both George and Charlotte were born, their names were announced two days after their birth, but we had to wait a bit longer this time to find out what name they picked.
It is thought that grandfather-of-three Prince Charle's visit to France and the Anzac Day tributes could have delayed the announcement.
The clear public's favourite was Arthur, closely followed by James and Phillip - after his great-grandfather Prince Philip.
However, none of these are in the top baby names 2018 list and Arthur only made the cut as a middle name, as did Charles - and we bet proud grandfather Prince Charles is chuffed about the sweet tribute!
Speculation over the royal baby's name intensified after his birth. Katie Baylis, spokesperson for Betfair, said: 'After introducing the new Prince to the world yesterday, next on the list for Kate and William is to announce to the world the name of the baby and as we wait, interest in baby name betting is at fever pitch.
William and Kate posed for the first time with their newborn son when they left the hospital at 6pm
'Arthur continues to head the market and the odds on the name have shortened into 2/1 from 3/1 after the birth of the baby.
'James and Phillip are second favourites at 4/1, with James proving particularly popular with punters this morning, which has meant we have had to cut those odds from 5/1 earlier today.
Prince George and Princess Charlotte visited their new little brother in hospital
'The other big movers this morning are Louis which is now 10/1 from 14/1, with William now 25/1 from 33/1 as the world, including many excited punters stand by for the next big announcement.'
It was also previously reported that the new royal baby could be named after one of William and Kate's favourite people - Prince Harry.
However, the clear favourites didn't make the cut and it was in fact Louis that was chosen.
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