US President Donald Trump 'stuck out like a sore thumb' at Pope Francis' funeral as he opted for a navy suit rather than black. The president attended the service with wife Melania, who was dressed in a black, sombre outfit with a head covering.

Trump was one of dozens of world leaders in attendance but drew heavy criticism for his decision to wear a blue suit, rather than traditional black. As TV shots panned to the US President, his choice of colour stood out starkly in contrast to the mourners surrounding him dressed in black suits. Trump was seated a few places along from French President Emmanuel Macron and Ukrainian President Volodymyr Zelensky, both of whom were dressed in black.

Social media users accused the US President of lacking respect for his decision to wear blue.

One user said: “Trump stands out like a sore thumb in a blue suit. Should have worn black. ”

Another noted: “Trump wearing a blue suit to the Pope's funeral, the man has zero respect.”

A third added: “How disrespectful, trump is at the Pope’s funeral wearing a blue suit & he looks completely out of place.

The US President and the late pontiff were known to have a difficult relationship, with Frances being critical of the Trump administration’s policies on welfare and migration.

However, ahead of travelling to Rome for the funeral, Trump described Frances as a “good man,” despite the late pontiff’s vocal criticism of the American right.

He said: "He loved the world, and he was just a good man. I met him twice, I thought he was a fantastic kind of a guy".

The late Pope was a relatively progressive leader of the Catholic Church, soften Rome’s stance on issues such as the role of women and LGBT people in Catholicism.

Such progressive ideas made Pope Francis unpopular in some quarters, especially amongst ultra-conservative Christians, many of whom are vocal supporters of Donald Trump.

In the wake of the death, MAGA acolyte and congresswoman Majorie Taylor Greene posted that "Evil is being defeated by the hand of God,” in an apparent reference to the pontiff’s death.