Archie Harrison Mountbatten-Windsor was born on May 6 and weighed 7 pounds and 3 ounces.
The photo of Baby Sussex comes days after reports that Markle and Prince Harry reportedly hired a nanny - with an "extensive" NDA - for their son.
The Duke and Duchess of Sussex haven't always stuck to tradition - but they are reportedly set to have their first child baptised at St George's Chapel where they famously tied the knot in May past year.
Target is now offering same-day delivery directly through its website
Time was, Amazon led the way in pushing the e-commerce industry towards a consumer expectation that delivery should be free. Same-day delivery is also available without a Prime membership for a $9.98 delivery charge per item ordered.
Earlier today, Prince William was seen playing with Prince Louis in a photo shared to celebrate Father's Day.
On Monday, Prince Harry and Duchess Meghan sent their well-wishes to Harry's grandfather on his 98th birthday, affectionately referring to the Duke of Edinburgh as "grandpa".
The Duke and Duchess of Sussex rode in a carriage together, along with Kate Middleton and Camilla, before the entire family joined Her Majesty on the balcony of Buckingham Palace, facing the cheering crowd, where the viral video was shot.
24H du Mans: Toyota s'offre un nouveau doublé… en grimaçant
Et surtout, ses pilotes ne veulent pas prendre tous les risques. On prend les mêmes que l'année dernière et on recommence.
In a message on the Clarence House Twitter page, Charles shared good wishes with "Dads everywhere" alongside an image of him with his two sons.
"I'm very excited to announce that Meghan and myself had a baby boy this morning, a very healthy baby boy", Harry said.
Harry previously spoke about his desire to start a family, saying: "I've longed for kids since I was very, very young".
It was captioned: "Happy Father's Day!".
Adani's Carmichael coal mine receives final environmental approval
After years of delay, the Queensland government finally gave the coal mine the green light to begin construction. The Australian Conservation Foundation said the Queensland government had "put politics ahead of science".
On US Mother's Day in May, the royals marked the day in private, although they did share a attractive close-up photo of Archie's tiny feet on Instagram.