The snap of Archie was posted on the website of Archewell, the charity founded by Prince Harry and Meghan Markle. The sepia tone photograph shows the back of Archie’s head as he stands in a large garden holding a bunch of balloons.
Speaking to Express.co.uk, body language expert Judi James suggested the picture has a traditional feel.
She said: “The choice of sepia tone for Archie’s second birthday photo is a puzzling one.
“Meghan and Harry have always been keen on monochrome photos and, although these have always had a nod towards the days before colour printing, they are also recognised as the cool, fashionable and modern option.
“Sepia is still very much associated with the Victorian era though, making this look more like a historic photo rather than a current one.”
The traditional tones seem to give a nod to the Christmas card released by the Sussexes last year, which showed a photograph of the family turned into a painting.
The expert continued: “This look, along with the pose, with its very traditional echoes of a small boy with balloons, seems to be in keeping with Meghan and Harry’s last Xmas card, which they styled to look like an illustration from an Enid Blyton book.
“It suggests both parents are keen on nostalgia and encouraging the kind of idyllic childhood that they might have read about in books when they were children themselves.”
Although the picture echoes the style of some snaps previously shared by the family, it is notably different from the last time the royals gave a glimpse of their son.
During an exclusive interview with Oprah Winfrey, Meghan and Prince Harry allowed a home video to be shared while they talked.
The black and white clip showed Archie on the beach running towards the camera.
Judi suggested the video revealed the Sussexes as “protective” of their son.
However, the birthday portrait suggests a more independent Archie, the expert claimed.
“It is a look that is in contrast to the very stylish video clip we last saw of Archie running on the beach that was played during the Oprah interview,” Judi revealed.
“That monochrome video was sharp and heavily contrasted to give a similar Vogue fashion style as Meghan and Harry’s favourite official photos together.
“Archie’s last appearances have shown a small child crawling or running towards the camera, which is usually held by Harry, or cuddled lovingly and protectively by his mother.
“Here though we appear to be shown a small boy becoming more independent, facing away and absorbed in the balloons rather than the camera or his parents.
“We also see Archie from back view. This is a theme used by Meghan and Harry for their iconic wedding photo when they stood with their backs to the camera, gazing in awe at the fireworks.
“Now we see Archie also turned away, gazing in awe at some huge balloons.”
As well as sharing the picture, Meghan and Prince Harry asked people to share donations.
A statement on the Archewell foundation website said: “We will not be able to truly recover until everyone, everywhere, has equal access to the vaccine.
“And with that intention, we are inviting you to contribute whatever you can – if you have the means to do so – to bring vaccines to families in the world’s most vulnerable places.
“For a donation of just five dollars, you can cover the cost of a dose for someone in need. And because we were able to secure matching support from a number of organizations, that $5 you give will automatically turn into 20 dollars – covering the cost of four doses.”