It was impossible to miss female Democrats present at President Donald Trump's State of the Union speech on Tuesday as they all turned out in white.

The striking sartorial choice was multilayered, having numerous important reasons behind it.

It was designed to honour those who came out in the midterm elections to give Democrats the House majority and celebrate the record-breaking number of women - most of them hailing from the blue party - elected to Congress in November.

TOPSHOT - Congresswomen, dressed in white in tribute to the women's suffrage movement, pose for a photo as they arrive for the State of the Union address at the US Capitol in Washington, DC, on February 5, 2019. (Photo by SAUL LOEB / AFP) (Photo credit should read SAUL LOEB/AFP/Getty Images) [[imagecaption|| Credit: Getty]]

Democrat women also wore white to pay tribute to the female politicians who came before them, noting that the achievements of these women and their fight for progression made it possible for them to them to be elected.

The distinctive outfits were also a nod to the suffragette movement of the early 20th century. Today, nearly 100 years after women earned the right to vote in America, the colour white remains a symbol of female unity, one that has been employed in the past by women including Hillary Clinton and Geraldine Ferraro.

In addition, the white ensembles yesterday served as a reminder of how the Trump administration has handled women's issues over the past two years - and a sign that Democrats plan to make women's security a priority in the future, something they made clear when Trump took to the stage to make his speech.

WASHINGTON, DC - FEBRUARY 05: President Donald Trump delivers the State of the Union address in the chamber of the U.S. House of Representatives at the U.S. Capitol Building on February 5, 2019 in Washington, DC. A group of female Democratic lawmakers chose to wear white to the speech in solidarity with women and a nod to the suffragette movement. (Photo by Alex Wong/Getty Images) [[imagecaption|| Credit: Getty]]

As the Republican leader announced that women had filled 58 per cent of the new jobs created in the last year, the group broke into cheers, raising their hands and high-fiving one another, heralding their own success, as well as other American women's.

The move left Trump shocked, who stated "you weren't supposed to do that," before telling them "don’t sit yet, you’re going to like this.

He then continued his address to declare: "All Americans can be proud that we have more women in the workforce than ever before — and exactly one century after the Congress passed the Constitutional amendment giving women the right to vote, we also have more women serving in the Congress than ever before."

WASHINGTON, USA - JANUARY 30: US President Donald Trump gives his first State of the Union address to Congress and the country in Washington, United States on January 30, 2018. (Photo by Samuel Corum/Anadolu Agency/Getty Images) [[imagecaption|| Credit: Getty]]

After Trump reported this fact, Democratic women started chanting "U-S-A", and were backed up by many of their male colleagues - who wore white ribbons in solidarity - as well as some Republicans.

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Following on from the midterm elections in November, there are now 127 female politicians in Congress - 102 in the House of Representatives and 25 senators. 106 of these women are Democrats, and 21 are Republicans. This makes up 23.7 per cent of the total.

US Representative Alexandria Ocasio-Cortez (D-NY), dressed in white in tribute to the women's suffrage movement, arrives for the State of the Union address at the US Capitol in Washington, DC, on February 5, 2019. (Photo by SAUL LOEB / AFP) (Photo credit should read SAUL LOEB/AFP/Getty Images) [[imagecaption|| Credit: Getty]]

Despite the president's happiness at the enthusiastic reaction, many have speculated that he will be unhappy that his daughter Tiffany wore the same colour as Democrat women. The reasoning behind the 25-year-old's outfit is uncertain, with some insisting it was a deliberate snub to her father and nod to the Democrats, and others claiming it was simply an accident.

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Here's why female Democrats wore white to Trump's State of the Union address