Perhaps that explains why Melania Trump is seemingly struggling to keep up appearances.

The awkward body language between the 47-year-old and her 70-year-old husband, US President Donald Trump, is increasingly drawing comment on social media.

In the latest incident, which occurred on Tuesday after the couple landed in Rome, President Trump was seen reaching for his wife's hand as the pair disembarked Air Force One.

Melania quickly raised her hand, seemingly to brush her hair away from her face.

It followed a similar situation after they landed in Tel Aviv on Monday, when Trump tried to take his wife's hand on the red carpet and she appeared to flick it away.

Eagle-eyed social media users will know that these aren't the first such moments.