It could all be a coincidence.

But eagle-eyed followers of Pete Souza's Instagram account have pointed out that the former White House photographer may be taking a dig at US President Donald Trump.

After creating his own personal account — which already has almost 900,000 followers — the day after Mr Trump's inauguration, Souza has posted a number of photos from his time as Barack Obama's photographer.

And some of them appear to have been posted at particular moments to draw a comparison between the former president and Mr Trump.

A photo of John Key, Malcolm Turnbull and Barack Obama, taken by Pete Souza. ( Supplied: White House/Pete Souza )

After a "robust", "contentious" and "hostile" phone call between Prime Minister Malcolm Turnbull and Mr Trump, Souza posted a photo of Mr Obama joking with Mr Turnbull and the former prime minister of New Zealand, John Key, last September.

And after a meeting between Mr Trump and Mexican President Enrique Pena Nieto was cancelled — over Twitter due to an escalating dispute over the proposed border wall — Souza posted a photo of Mr Obama and Mr Pena Nieto sampling tequila.

Barack Obama sampling some tequila with Enrique Pena Nieto in 2013. ( Instagram: Pete Souza )

And this week Souza posted a photo — which simply included three pairs of female legs alongside those of Mr Obama — of the former president "meeting with top advisors".

He captioned the photo with: "This is a full-frame picture. I guess you'd say I was trying to make a point".

Mr Trump has come under fire for his predominantly white, male Cabinet picks, with women and non-white people shaping up to hold five positions out of a total of 22.

Souza also posted several photos of Mr Obama meeting with young refugees and advocates in the days following Mr Trump's executive order banning travel from seven majority Muslim countries for 90 days.

Barack Obama with a young refugee at a Dignity for Children Foundation classroom in 2015. ( Instagram: Pete Souza )

One of those photos was of Mr Obama meeting with six-year-old Alex Myteberi, who wrote a letter to the president offering to help five-year-old Syrian refugee Omran Daqdeesh, whose image went viral after he was photographed covered in dust and blood in Aleppo.

Alex said Omran could move in with his family, and that he would teach the Syrian boy English and share his toys.