Katie Hopkins was spotted on board a flight and marching through Heathrow Airport without a face mask on.
The controversial former Apprentice star left fellow passengers outraged as she boarded a flight from LAX to London on Monday afternoon without a covering on her face.
She had been to the US to appear as a special guest at rallies in support of President Donald Trump, who is hoping to be re-elected.
Katie, 45, was filmed on board the British Airways flight without a mask on as she settled into her seat in business class amid the ongoing coronavirus pandemic.
Then, she was pictured standing in Heathrow without a face covering.
One of her fellow passengers exclusively told Mirror Online: "She went through the whole flight without wearing a mask. It was ridiculous and not a flight you wanted to be on.
"She didn't wear a mask on the flight and wandered through Heathrow without one on as well."
Official guidelines on the Heathrow Airport website state that "all passengers aged 11 and older are required to wear face coverings at all time within our terminal buildings."
When it comes to the actual flight, almost all airlines have stated since June that masks should be worn throughout flights, although passengers are allowed to change their masks every four hours.
The British Airways site states: "We require you to wear a face mask at all times. As a guide they last up to four hours, so bring enough for the duration of your trip."
Back in July, Katie was slammed for encouraging people to ditch face masks, despite them becoming an important part of the fight against coronavirus.
After being banned from Twitter, she took to Instagram to share her views on face coverings.
She shared a tweet from Sainsbury's saying that they would not be challenging people who came into their stores without a face mask on as "they may have a reason not to wear a mask".
Katie branded the supermarket "little legends", seemingly telling her followers that they don't have to wear masks.
She was slammed for her message.
One follower told her: "You are actually encouraging people to not wear a mask and putting lives at risk."
Another echoed: "How stupid and careless are you? Some vulnerable person will actually listen to this god awful advise and may lose their life. Stop with this utter nonsense now".
Katie also recently shared a picture of a child in a push chair wearing a face mask and visor.
She captioned it: "What the hell are we doing to our children? This is a mental illness. Masked. Blinded. Isolated. To what end?"
Mirror Online has attempted to contact Katie's representatives for comment.
