Although the tot's parents can't be seen so we don't know for sure which royal baby it is, the age of the child has led many to believe it's Archie.
Meghan and Harry are keen to raise their son out of the royal spotlight, so we haven't seen as much of him as other royal children.
They didn't pose on the hospital steps after Meghan gave birth, breaking from the tradition set by Princess Diana and continued by the Duchess of Cambridge.
Instead, they invited a few members of the press to a small photocall a few days later.
They've also released a few photos from Archie's christening and were photographed taking him to meet Archbishop Desmond Tutu during their tour of South Africa last year.
They released two photos of him over the Christmas and New Year period, but that was the last time we saw Archie.
Charles also has a snap of the Queen, Prince Philip and the Queen Mother in his office, and a picture of a stag.
There's a vase of lillies on the desk and some daffodils.
Like his mother the Queen, who famously always has photos of her loved ones everywhere in all of her royal homes, Charles often gives fans a glimpse at his pictures.
Photos from inside Clarence House taken in 2018 show Charles has a number of snaps of his parents on display in stunning gold and silver frames.
Archie is now living in LA with Meghan and Harry, who officially quit the royal family this week.
In the video, which Charles released in his role as patron of Age UK, he speaks about the "mild symptoms" he had from coronavirus.
He said: "Having recently gone through the process of contracting this coronavirus – luckily with relatively mild symptoms – I now find myself on the other side of the illness, but still in no less a state of social distance and general isolation.
"As we are all learning, this is a strange, frustrating and often distressing experience when the presence of family and friends is no longer possible and the normal structures of life are suddenly removed."
He goes on to discuss the incredible job people are doing of looking after their community during the coronavirus pandemic.
He said: "At such an unprecedented and anxious time in all our lives, my wife and I are thinking particularly of all those who have lost their loved ones in such very difficult and abnormal circumstances, and of those having to endure sickness, isolation and loneliness.
"As Patron of Age UK, and my wife the Patron of SilverLine, our hearts go out to all those older people throughout this country who are now experiencing great difficulty."
Proud granddad Prince Charles appears to have shown off a new photo of the youngest member of his family while filming a new video from his private office.
A snap of what fans believe is Archie Mountbatten-Windsor, Meghan Markle and Prince Harry's little boy, can be spotted behind the heir to the throne in his Age UK coronavirus Covid-19 message.
In the message, Charles speaks publicly about his personal battle with the deadly disease for the first time, before praising the NHS and the hard work of key workers at this awful time.
Eagle-eye fans were quick to spot a recent photo of a baby dressed in a white sun hat and t-shirt.
The photo appears to have been taken outside in front a bush.