A CNN anchor made an embarrassing on air blunder on Thursday when she mistook the Star Spangled Banner for the French national anthem.

Poppy Harlow was covering President Trump's arrival in Paris to meet President Emmanuel Macron this morning.

The nation's leaders shook hands and then the men stood as a band played the United States' national anthem.

Scroll down for video

Poppy Harlow (left in 2011 at the Gracie Awards gala and right last October at the women's Fortune summit) made an embarrassing on air blunder on Thursday when she mistook the Star Spangled Banner for the French national anthem.

Harlow was covering President Trump's arrival in Paris to meet President Emmanuel Macron this morning (pictured)

Meanwhile, Harlow who was discussing what pressing issues the presidents would be tackling during the trip, such as the ceasefire in Syria and trade partnerships, then paused her commentary to say: 'Let's just listen in to the French National Anthem for just a moment.'

As the unmistakable notes of the Star Spangled Banner played out, now at volume, a rather embarrassed-sounding CNN anchor corrected her mistake.

'The US American national anthem, I should say,' she said, with an awkward laugh. 'Let's listen.'

Trump and first lady Melania are in France for the start of a carefully-choreographed trip which will see the couple fine with President Macron and his wife Brigitte at the Eiffel tower this evening, before celebrating Bastille Day together tomorrow/

Trump and Macron had been welcomed by a military band during a ceremony that preceded a tour of the military museum.

The nation's leaders shook hands and then the men stood as a band played the United States' national anthem, when Harlow paused her commentary to say: 'Let's just listen in to the French National Anthem for just a moment'

The two presidents walked out together solemnly into an open square, where they listened to both countries' national anthems, then made their way toward the Cathedral of Saint-Louis des Invalides.

Trump put his hand on his heart as the Star Spangled Banner played. Macron stood still during it and La Marseillaise.

First Lady Brigitte Macron of France and First Lady of the United States Melania Trump looked on from the steps of the cathedral as their husbands stopped to observe the building's architecture.

Macron placed his hand on Trump's back as they walked over to a receiving line of military officials and aides and shook each of their hands.

Grip: Macron's handshake with Trump when they first met became notorious but on Thursday it was a more relaxed affair

Le handshake: Brigitte Macron, 64, kept an extended grip on Trump's hand as he greeted her at Les Invalides, the French monument the country's military

On the US side, White House chief of staff Reince Priebus, National Security Advisor HR McMaster, Joint Chiefs of Staff Chairman Joseph Dunford, National Economic Advisor Gary Cohn, Deputy National Security Advisor Dina Powell and Homeland Security Advisor Thomas Bossert were greeted first by Macron, then Trump, who trailed behind. He was introduced afterward to their French counterparts, shaking their hands as Macron gave him their names.

The presidents reunited with their wives when the ceremony concluded to pay their respects to Napoleon, the emperor seen as the founder of modern France - although he was defeated in 1815 at Waterloo - and Marshal Foch, the French general who was the supreme allied commander in World War I.

Trump's meeting with the French first lady raised eyebrows to her: 'You know, you're in such good shape,' before shaking her hand, and holding it in a prolonged grip.