Donald Trump's raging spat with Sadiq Khan turned evermore personal today as the President endorsed a jibe mocking the Mayor of London's stature as 'nipple-height'.

As the increasingly bitter war of words between the two leaders reached boiling point, Trump retweeted a news article reporting on Khan's flagging popularity.

The story was shared by commentator Katie Hopkins who branded Mr Khan the 'Mayor of Londonistan' and blasted the amount of knifings which have rocked the capital on his watch.

She tweeted: 'The nipple-height Mayor of Londonistan has NEVER been so unpopular.

Donald Trump's raging spat with Sadiq Khan turned evermore personal today as the President endorsed a jibe mocking the Mayor of London's stature as 'nipple-height'

It is the latest height-related attack in the pair's feud and comes after Khan labelled Trump 'a six-foot-three child in the White House' in June

'He has MINUS approval ratings because we are stab-city. London deserves better. Get Khan Out.'

It is the latest height-related attack in the pair's feud and comes after Khan labelled Trump 'a six-foot-three child in the White House' in June.

Strain has been heaped on the relationship between Washington and City Hall in recent months as both men publicly criticise each other's administrations.

These tensions came to a head during the President's state visit when he fired off a tweet calling Khan a 'stone cold loser' during his Air Force One flight to Stansted Airport.

Khan retorted that Trump was exhibiting the 'sort of behavior I would expect from an 11-year-old'.

As the increasingly bitter war of words between the two leaders reached boiling point, Trump retweeted a news article reporting on Khan's flagging popularity

Trump's state visit was met with widespread protests in the capital which saw demonstrators fly the famous Trump baby blimp which Mr Khan had previously endorsed

The trip was met with widespread protests in the capital which saw demonstrators fly the famous Trump baby blimp which Mr Khan had previously endorsed.

The US President made a series of outspoken comments about violence in the capital during the visit, claiming hospitals are a 'sea of blood' because 'everyone is being stabbed'.

In 2017, Trump criticised Khan's response to the Borough Market terrorist attack, saying: 'Pathetic excuse by London Mayor Sadiq Khan who had to think fast on his 'no reason to be alarmed' statement. MSM is working hard to sell it!'

Shortly after that, Khan called for Trump's visit to the UK to be cancelled, saying his policies 'go against everything we stand for'.

The mayor has also branded Trump a 'twentieth century fascist' and a 'poster boy for racists' and remarked that the president appears 'obsessed' with him.