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Bruno Mars beat Jay-Z for the top Grammy Awards on Sunday, but the surprise star of the night was former Democratic presidential candidate Hillary Clinton reading from Michael Wolff's controversial book "Fire and Fury."

A taped parody sketch saw Grammy Awards host James Corden audition celebrities, including John Legend, Cher, Cardi B and Snoop Dogg. They read excerpts from the deeply critical book about President Donald Trump's first year in office, ostensibly as contenders for a spoken word Grammy.

Clinton, who lost the 2016 election to Trump, read an excerpt from the book about Trump's eating habits. "One reason why he liked to eat at McDonald's: Nobody knew he was coming and the food was safely pre-made," Clinton read.

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Corden then praised her, saying, "The Grammy is in the bag."

The president's family and members of his administration immediately criticized the segment.

His son Donald Trump Jr. tweeted: "Getting to read a #fakenews book excerpt at the Grammys seems like a great consolation prize for losing the presidency."

Getting to read a #fakenews book excerpt at the Grammys seems like a great consolation prize for losing the presidency. #GrammyAwards — Donald Trump Jr. (@DonaldJTrumpJr) January 29, 2018

The more Hillary goes on television the more the American people realize how awesome it is to have @realDonaldTrump in office #GrammyAwards2018 — Donald Trump Jr. (@DonaldJTrumpJr) January 29, 2018

In a follow-up tweet, he added: "The more Hillary goes on television the more the American people realize how awesome it is to have @realDonaldTrump in office."

Nikki Haley, the U.S. ambassador to the United Nations, who is known to post on social media about her love of pop music, tweeted that Clinton's appearance "ruined the Grammys. Such a shame."

I have always loved the Grammys but to have artists read the Fire and Fury book killed it. Don’t ruin great music with trash. Some of us love music without the politics thrown in it. — Nikki Haley (@nikkihaley) January 29, 2018

Wolff's book "Fire and Fury: Inside the Trump White House" became an instant bestseller on Jan. 5 when its release was pulled forward after published excerpts set off a political firestorm, threats by Trump lawyers of legal action and an effort to halt publication.

The book, dismissed by Trump as full of lies, depicts a chaotic White House, a president who was ill-prepared to win the office in 2016 and aides who scorned his abilities. It is based on extensive interviews with Trump's former chief strategist, Steve Bannon, and other aides.