And here's President George W. Bush's appearance at the 2006 APEC summit in Hanoi. He is waving in a Vietnamese "áo gấm" — while, like Trump, also standing next to Putin.
Trump was not the first to wear the traditional shirt at an APEC summit — here, former President Barack Obama is seen at a summit in the Philippines with President Benigno Aquino wearing a shirt called a "barong."
Putin shared a friendly yet somewhat awkward high-five with Peruvian President Pablo Kuczynski.
Trump looked somewhat uneasy on stage in his oversized, traditional-style Vietnamese shirt, while Putin looked quite comfortable wearing it over his suit.
With their resplendently blue shirts now in full view, the two leaders continued to shake hands and chatted briefly.
As people filed in for the group photo, Trump and Putin greeted each other with a handshake.
