Hillary Clinton attends US President Donald Trump Inauguration

Defeated Democratic presidential candidate Hillary Clinton and her family arrive at the U.S. Capitol for Trump's inauguration

For Hillary Clinton more than anyone else, Donald Trump's inauguration was a bitter pill to swallow and while she flashed her pearly whites with a dazzling smile for the cameras and the cheering crowds in the Capitol, there was a moment of darkness.

The former Democratic nominee, plastered on a smile in the face of the stinging defeat while Russian hacking reports continue to emerge.

Tweeting before the inauguration ceremony, Hillary wrote: "I'm here today to honor our democracy and its enduring values. I will never stop believing in our country and its future."

Emotional Hillary Clinton

Former Democratic presidential nominee Hillary Clinton and former US President Bill Clinton arrive on the West Front of the US Capitol on January 20, 2017 in Washington, DC. Donald Trump took the first ceremonial steps before being sworn in as the 45th president of the United States Friday -- ushering in a new political era that has been cheered and feared in equal measure. / AFP PHOTO

Former Us President Bill Clinton and his wife Hillary Clinton arrive on the platform of the US Capitol in Washington, DC, on January 20, 2017, before the swearing-in ceremony of US President-elect Donald Trump. / AFP PHOTO