Kensington Palace have taken to Twitter to confirm some very happy news ahead of the Royal Wedding on 19th May.
It's been revealed that Prince Harry has officially asked his older brother, The Duke of Cambridge, to be his best man.
"Prince Harry has asked his brother The Duke of Cambridge to be his Best Man at his wedding to Ms. Meghan Markle," the Kensington Palace account tweeted this morning, along with a selection images of the two brothers looking like best pals.
This was then followed up with another tweet, explaining how Harry had served as Prince William's best man at his wedding to Kate Middleton in 2011.
"Prince Harry served as best man to The Duke of Cambridge at his wedding to Miss Catherine Middleton in 2011."
The palace then shared an adorable image of the two princes as children dressed up as policemen.
"The Duke of Cambridge is honoured to have been asked, and is very much looking forward to supporting his brother at St George's Chapel, Windsor on May 19th."
This comes as the world (im)patiently waits for Wills and Kate to confirm their new son's name.
GALLERY: First pictures of the royal baby
Royal baby (slider)
1 of 13Royal Town crier Tony Appleton
Royal Town crier Tony Appleton announces the birth outside of the Lindo Wing at St Mary's Hospital.
2 of 13Royal well wishers
Royal well wishers wait outside of the Lindo Wing to get a glimpse of the new Prince.
3 of 13Prince William
Prince William leaving the Lindo Wing to pick up children, Prince George and Princess Charlotte.
4 of 13Prince William, Prince George and Princess Charlotte
Prince William arriving back at the Lindo Wing with his children, four-year-old Prince George and two-year-old Princess Charlotte.
5 of 13Prince William, Prince George and Princess Charlotte
Princess Charlotte waving to the press as she enters the Lindo Wing to visit her new baby brother.
6 of 13The Duke and Duchess of Cambridge
The Duke and Duchess of Cambridge introduce their newborn son to the world.
7 of 13The Duke and Duchess of Cambridge
The Duke and Duchess of Cambridge introduce their newborn son to the world.
8 of 13The Duke and Duchess of Cambridge
The Duke and Duchess of Cambridge introduce their newborn son to the world.
9 of 13The Duke and Duchess of Cambridge
The Duke and Duchess of Cambridge introduce their newborn son to the world.
10 of 13The Duke and Duchess of Cambridge
The Duke and Duchess of Cambridge introduce their newborn son to the world.
11 of 13The Duke and Duchess of Cambridge
The new Prince leaving the hospital with The Duke and Duchess of Cambridge.
12 of 13The Duke and Duchess of Cambridge
13 of 13The new Royal baby!
The Duke and Duchess of Cambridge welcomed their third child into the world on Monday 23rd April, but have not yet revealed the name they've chosen for the new prince.