Hillary Clinton wore a white suit to her third presidential debate with Donald Trump, sparking theories about the hidden significance behind her wardrobe choice.

It was pointed out that the Democratic nominee wore a red outfit at the first debate, a blue one at the second and a white one in the final debate. That's right, Clinton wore red, white and blue to the debates. Here's the proof:

First debate:

Democratic presidential candidate Hillary Clinton greets supporters during the first presidential debate at Hofstra University. 

Second debate:

Democratic presidential candidate Hillary Clinton during the second presidential debate at Washington University in St. Louis. 

Third debate:

Democratic presidential candidate Hillary Clinton during the third and final presidential debate at University of Nevada Las Vegas. 

Clinton also wore white to her acceptance speech at the Democratic National Convention in July.

The New York Times pointed out at the time that white was one of the three main colors of the women's suffrage movement. The National Woman’s Party from the Belmont-Paul Women’s Equality National Monument in Washington quotes a mission statement for the Congressional Union for Woman Suffrage, which says, “The colors adopted by the union are purple, white and gold, selected for the significance they bear in the work the union has undertaken. Purple is the color of loyalty, constancy to purpose, unswerving steadfastness to a cause. White, the emblem of purity, symbolizes the quality of our purpose.”

The Times also noted that Geraldine Ferraro wore white when she accepted the nomination to become the first female candidate for vice president for a major American political party at the 1984 Democratic convention.

Geraldine Ferraro waves to the crowd at the 1984 Democratic Convention in San Francisco. 

So, it appears Clinton's fashion choice deliberately invoked patriotism and the history of women's struggle for political equality in America.

This composite photo shows the red, white and blue outfits Clinton wore at the three presidential debates