The official swearing-in had take place on Saturday, but Trump made a decision to replicate the event this evening in the East Room of the White House.
The newest justice's wife and two daughters were in seats reserved for justices' guests, along with retired Justice Anthony Kennedy.
Donald Trump has said newly-confirmed supreme court Justice Brett Kavanaugh, who was accused of sexual assault or misconduct by three women, was "caught up in a hoax that was set up by the Democrats".
"The Supreme Court is a team of nine, and I will always be a team player". Kavanaugh has also hired four clerks, all women, the first time that has happened.
Media captionDonald Trump's nominee has been embroiled in a bitter battle over sexual assault allegations.
The return to judicial matters comes after weeks of heated debate over his confirmation in the wake of an allegation from California professor Christine Blasey Ford that he sexually assaulted her when they were high schoolers in suburban Maryland decades ago.
At the official swearing-in event at the White House on Monday, Trump said Kavanaugh had been a victim of "a campaign of political and personal destruction based on lies and deception" adding that Kavanaugh had been "proven innocent".
The FBI probe into the allegations was not a criminal investigation, however, and its report offered no conclusion of guilt or innocence.
United States President Donald Trump said on Monday that he was apologising on behalf of the whole country to his new conservative Supreme Court justice after one of the most contentious confirmation processes in USA history.
The President put on a big show at the White House tonight to swear Judge Kavanaugh in for a second time, two days after his actual swearing in. Almost two-thirds, or 63%, of likely women voters said they will vote for the Democratic congressional nominee in November, compared to 33% of likely women voters who said they'll vote Republican.
Trump and his fellow Republicans are hoping the confirmation of the 53-year-old conservative jurist will energize their supporters in the midterm voting when political control of Congress is at stake. And pundits presumed POTUS meant to take a victory lap after his nominee got the Senate's stamp of approval by a slim 50-48 margin following a very divisive confirmation battle, in which Kavanaugh faced multiple sexual misconduct allegations, but especially that he had sexually assaulted Ford when he was in high school.
Cory Booker of New Jersey, who sits on the senate's judiciary committee, was asked Sunday in Iowa by Yahoo News about the prospects of a Kavanaugh impeachment.
U.S. Sen. Cory Booker, D-N.J., speaks during the Iowa Democratic Party's annual Fall Gala in Des Moines, Iowa, Oct. 6, 2018.
Do Democrats want to impeach Justice Kavanaugh?
The other eight justices also were at the White House Monday. With Kavanaugh's ascent to the nine-member high court, Trump now has filled two vacancies on the court from his list, including Neil Gorsuch past year.
His ascent to the court was sealed by a 50-48 Senate vote last Saturday.