WASHINGTON - Ken Starr, who was at the center of Bill Clinton's impeachment in the 1990s, and America's biggest celebrity lawyer Alan Dershowitz were announced Friday to be joining President Donald Trump's Senate impeachment defense.

The administration has yet to unveil the full team but confirmed that White House counsel Pat Cipollone will be lead lawyer, backed by Trump's personal attorney Jay Sekulow.

"President Trump has done nothing wrong and is confident that this team will defend him, the voters, and our democracy from this baseless, illegitimate impeachment," the White House said in a statement Friday evening.

But where Cipollone is ultra-discreet, and rarely speaks on the record, Dershowitz and Starr will bring the legal world's equivalent of rock stardom when the trial begins on Tuesday.

US media reports said Starr, the special prosecutor in the 1998 Clinton impeachment saga, was joining the Trump legal team. He is a hero to many on the right, even if Clinton ultimately was acquitted in the Senate.

No less controversial is the choice of Dershowitz, whose past clients include disgraced financier Jeffrey Epstein, as well as film director Roman Polanski and former heavyweight boxing champion Mike Tyson, both embroiled in notorious rape cases.

Dershowitz himself has been accused of being a witness and participant in Epstein's sex crimes -- allegations he strenuously denies.

Dershowitz's most famous case was the successful defense of former NFL star O.J. Simpson, whose televised 1995 murder trial riveted the nation.

In the Senate, Dershowitz, who teaches at Harvard University, says he'll be pursuing loftier matters.

In a post on Twitter Friday, Dershowitz said he would "present oral arguments at the Senate trial to address the constitutional arguments against impeachment and removal."

Lead lawyer Cipollone is the author of the Republican president's uncompromising strategy to stonewall the Democrats' impeachment investigation, calling it "partisan and unconstitutional."

Another high-powered player will be Sekulow, a stalwart in the White House pushback against a two-year probe by special counsel Robert Mueller into Trump's controversial dealings with Russia.

A Supreme Court veteran and a big name on the right-wing evangelical Christian scene, he won't be dazzled by the bright lights of Washington's ultimate fight.

Rounding off the roster will be Robert Ray, another figure from the investigations into Clinton that rocked Washington in the 1990s, US media reported. -AFP