US first lady Melania Trump showed either a shocked, awed, confused, horrified, or a combination-of-everything expression after shaking hands with Russian President Vladimir Putin.

Melania joined her husband US President Donald Trump during a meeting with Putin in Helsinki, Finland, where the two world leaders reportedly discussed how to improve relations between their two nations.

In a video, after shaking hands and a brief spoken exchange with Putin, Mrs Trump, in a yellow coat, turns to the glare of the cameras with a strange, frozen expression on her face.