Hardly tactful behaviour. As for those who defend Trump by saying that the blue suit was unconventional but hardly a diplomatic breach, that's fair enough.

Trump’s Blue Suit at Pope’s Funeral Draws Attention President Trump’s choice stood out in a sea of world leaders and famous faces who were dressed in customary black.

I've been doing Santa since I was 14 years old. My mom made my first Santa suit out of a pajama pattern for a young man. It was horrible, cheesy.