"Mother and baby are doing incredibly well", he added, not shying away from the sheer excitement painted across his face.
A beaming Prince Harry said: "It's been the most wonderful experience I could ever have possibly imagined".
In addition to its recent popularity, Arthur is a royal family tradition.
When did Meghan announce her pregnancy?
Elsewhere, Meghan's friend and makeup artist Daniel Martin described himself as a "proud gay uncle" online and re-posted the couple's official Instagram announcement - an image with the words, "It's a boy" across it. May 6, the baby was a week overdue.
The couple are yet to announce a name. "3oz", Sussex Royal wrote.
Babies are treated to £3,500 Moses baskets designed by luxury furniture brand Dragons of Walton Street, as well as £14,000 four-poster Little Duchess cot.
The Duke and Duchess of Cambridge, by contrast, had faced a mass photocall at the private Lindo Wing of St Mary's Hospital, Paddington hours after all three of their children were born.
Katy Perry, former chandelier, changed into a hamburger at the Met Gala
Not many people could pull off the look, but the "California Gurls" singer did it with a shimmering smile on her face. Ciara showed up on the red carpet at the 2019 Met Gala tonight in NY and had everyone green with envy over her look.
For this reason, Kate adopted a flexible approach to her maternity leaves, taking a single month off after giving birth to Prince George in 2013, and four months after the arrival of Princess Charlotte in 2015.
The Duchess has a tight-knit bond with her former castmates and even invited them to her wedding to Prince Harry last May.
What happened after the birth?
The royal baby could also be spending time in Africa, with plans being made for the duke and duchess to spend an extended period overseas as a way of harnessing their worldwide appeal and expanding on their Commonwealth work.
The baby's sex was a surprise for the delighted couple, who chose not to find out what they were having.
He will be shown publicly in around two days' time, according to Prince Harry. She did not make any immediate announcement after the baby's birth.
The baby's home will be Frogmore Cottage - Harry and Meghan's new bolthole in Windsor Home Park in Berkshire.
United Kingdom royal names are normally chosen from a relatively restricted pool of those used by past kings and queens. He also is the 8th great grandchild of the reigning and the oldest monarch Queen Elizabeth.
Iran suspends parts of nuclear deal
The U.S. announced last week it would no longer waive sanctions against countries that buy Iranian oil - another blow to Iran. Under the deal, Iran agreed to check its nuclear activities in return for an easing of sanctions.
When William and Harry were at school and during their later military careers, they used "Wales" - derived from their father's official title as Prince of Wales.
His surname is expected to be Mountbatten-Windsor. "The Duke was present for the birth".
Former tennis star and champion of women's rights Billie Jean King tweeted: "What a lucky baby to grow up with such loving, inclusive and progressive parents".
The newborn, who has yet to be named, is the Queen's eighth great-grandchild and seventh in line to the throne. Prince William, grandfather Prince Charles and cousin Prince Louis have it as a middle name.
The London Eye is lit up in red, white and blue colours in honour of the birth of a son to Prince Harry.
Will he or she have dual citizenship?
The world has been waiting for Baby Sussex for what feels like ages. "So I think there are a lot of names here that work with the British royal family tree but also have strong roots in the U.S". His other two children, Samantha, from Virginia, and Thomas Jr., who resides in OR, have five kids between them, all of whom live the US.
Why has the world gone wild over Meghan and Harry's son?However that was done well ahead of time and this royal baby is much further down the line of succession. Such a lovely time for a family.
Thiago Silva a été opéré du genou
Par conséquent, il ne participera ni aux derniers matchs de Ligue 1, ni à la Copa America , prévue du 14 juin au 7 juillet prochain.