Perhaps she wanted to be early, or just wanted a good first look at the Cold Stream military band that performed the US national anthem for the trio once they all arrived.
Organisers of the crowd-sourced inflatable say that while Trump won't see the blimp in person, as his visit does not take in the historic Palace of Westminster, it's hoped it would come to the attention of the Twitter-loving president online.
His meeting with Queen Elizabeth comes after Trump was widely condemned by British lawmakers for comments he made in the same interview about May as well as on the topic of mass immigration in Europe.
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The Twitter account, is encouraging fans to download and stream the song ahead of 12 July to ensure it is number one on the day. The move was speculated to have been decided in order to avoid planned protests in the area.
A controversial balloon depicting U.S. President Donald Trump as an angry orange baby, dressed in a diaper, was flying in Parliament Square next to the Houses of Parliament on Friday as thousands prepared to march in protest at his visit to Britain. "She is a tremendous woman", he said.
Just one in three (35 per cent) Britons polled earlier in the week thought the monarch should meet Trump, as opposed to half (49 per cent) who thought she should not.
The US president met the Queen at Windsor Castle and, instead of the scheduled 30 minutes, the two - along with First Lady Melania - spent around 45 minutes together.
However, the meeting with Queen Elizabeth on his first visit to Britain as United States president still seems to rankle.
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Breyer, who turns 80 in August, was asked last week during an appearance in Colorado if he was contemplating retirement. The next oldest Republican-appointed justice on the court is Thomas, who at 70 could serve for another decade or more .
The first lady wore a pale pink two-piece ensemble with her hair pulled back for the occasion; the queen was in a blue coat. Oh dear, she just looked at her watch.
His Scottish-born mother, Trump added, was also enamored with the British royalty.
"Given Trump's appalling actions and rhetoric, he doesn't even deserve to look at a statue of Churchill let alone sit in his seat".
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During the outing on Tuesday, Gomez was approached by photogs, who asked her for comment on the engagement news. In a sweet post, Bieber confirmed the engagement news and declared that Baldwin is the love of his life.
Mr Johnson said the claim was "simply ridiculous", adding: 'I would welcome the opportunity to show Mr Trump first hand some of the excellent work our police officers do every day in local neighbourhoods throughout our city.