Megyn Kelly mocked the “amount of retouching” that made Hillary Clinton appear younger while she posed for the cover of her new book.

“The amount of retouching on this face I haven’t seen since Joan Rivers had her 15th surgery — God love Joan,” Kelly said on her SiriusXM podcast “The Megyn Kelly Show” on Wednesday.

Kelly said that she didn’t know what Clinton was “trying to be with this soft focus.”

“She looks nothing like herself,” Kelly noted.

She also took aim at Clinton, the 76-year-old former secretary of state and US senator from New York, over a New York Times guest column she wrote in which she advised fellow Democrat, President Joe Biden, on how to debate former President Donald Trump.

The two men are scheduled to square off in the first of two presidential debates which will be simulcast on CNN on Thursday evening.

“Why aren’t you the president if you’re so smart about how to debate Trump? Asking for a friend,” Kelly said on her podcast.

Kelly added that Clinton was trying to portray an image of an “elder stateswoman” who “can do it perfectly.”

In the Times op-ed, Clinton wrote that Trump “starts with nonsense and then digresses into blather.” She wrote that Trump, who defeated Clinton in 2016, “interrupts and bullies…because he wants to appear dominant and throw his opponent off balance.”

Kelly blasted Clinton, saying “these are just insults.”

“Actually what he [Trump] did was he got out there and said you’d be in jail if he were in charge, and people loved the challenge of power of somebody who’d been considered untouchable,” Kelly said, praising the former president for “raising issues that really mattered to working class and middle America, whom she totally ignored.”

“None of that is in the op-ed,” Kelly added.

The Post has sought comment from Clinton.