Celebrities flocked to Washington, D.C., in celebration of Donald Trump's presidential inauguration on Jan. 20.

See images of the celebrities and prominent business leaders attending the inauguraton of President Donald Trump in Washington, D.C., on Monday.

President Trump and first lady Melania Trump attended the Commander-in-Chief, Liberty and Starlight inaugural balls. Here are some of the highlights.

Ahead of trump being officially sworn in as the 47th president of the U.S., a number of celebrities have shared their thoughts.

It's "all going to end" tomorrow, he says, adding that on Monday Trump will sign an executive order "ending the border invasion, sending the illegals home and taking America back", to loud cheers from the crowd. He ends by saying the American people "won" and "still control this country" to more loud cheers and screams.

Carrie Underwood might not be Beyoncé or Garth Brooks in the celebrity superstar ecosystem. But the singer’s participation in President-elect Donald Trump’s inauguration is nevertheless a sign of the changing tides.

Trump, 78, touched on his decision to appoint the Tinseltown legends during his “Make America Great Again Victory Rally” in Washington, D.C., on Sunday.

Mel Gibson, Sylvester Stallone, and Jon Voight have booked new roles… in Donald Trump's fold. The three actors were part of a puzzling announcement the once and future president made via Truth Social on Thursday.

Music stars, politicians and Donald Trump fans have let their hair down at the three glitzy, post-inauguration celebrations in Washington DC.

Mr. Trump’s co-stars may have changed, but the show has not. He remains a reality-TV star with a reality-TV performer’s instincts. (Fittingly, his swearing-in featured a performance by the country star and “American Idol” winner Carrie Underwood — like him, a reality celebrity who went on to bigger things.)

Donald Trump's inauguration was moved indoors and will limit who can be inside the Capitol, but there are still a number of celebrities who are slated attend.