Ms Reeves, who will give a speech in Washington DC on Wednesday, will set our Labour’s economic vision for the UK.

The shadow chancellor tweeted: “With a Labour Government, we will restore our economic dignity at home and abroad. Tonight, I fly to the US to start that work.”

Initially, the photo Ms Reeves posted to highlight her trip included her plane seat number, which read ‘3K’.

She later re-posted the photos, blurring out her seat number. It now appears to have been deleted from her page entirely.

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This placed Ms Reeves in British Airway’s “Club World” seat, which offers passengers “a spacious seat, which converts into a fully flat bed”.

British Airway’s “Club World” service also offers:

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A number of Tory MPs have used the tweet to criticise the shadow chancellor.

Mark Jenkinson told The Telegraph: “Imagine the uproar from the Labour Party, not only if a party donor had paid to upgrade a minister’s travel to business class, but if said minister had then tried to pull the wool over people’s eyes.

“As always for Labour, it’s one rule for them and one for everybody else.”

Meanwhile, Brendan Clarke-Smith, the Tory MP for Bassetlaw, accused Labour of “hypocrisy”.

He told the publication: “Start spreading the news. When it comes to luxury travel, with Labour they still expect to be top of the list – it’s a case of do as I say, not as I do.

“Whilst they claim they want to make a brand new start of it, when it comes down to it, to be frank, they are still the same old hypocrites they’ve always been.”