Marilyn Monroe had both Kennedy brothers in bed hours after singing ‘Happy Birthday, Mr. President” sang

Shirley MacLaine says that Marilyn Monroe slept with both John F. Kennedy and his brother Robert on the same night.

The Oscar winner, 90, makes the outrageous claim in her new coffee book: “The wall of life: photos and stories from this beautiful life”, with a photo from May 19, 1962 – the night Monroe breathlessly shouted “Happy Birthday, Mr. President” sang to JFK.

MacLaine was present at the event and said she attended an after-party where she saw President Kennedy leaving a bedroom with Monroe in it.

Shockingly, MacLaine claims that Robert F. Kennedy – who was then serving as US Attorney General – entered the room immediately afterwards, presumably to have sex with the ‘Some Like It Hot’ star, right after his sibling did.

“In 1962, at John F Kennedy’s famous 45th birthday celebration at Madison Square Garden, Jimmy Durante and I performed for the President and the audience, but what most people remember is Marilyn Monroe saying “Happy Birthday” to sang to him,” writes MacLaine. in her book.

“Afterwards there was a private party at (Democratic Finance Chairman) Arthur Krim’s house… Jack Kennedy had just walked out of the bedroom behind me, and Bobby (Robert) Kennedy had just walked in. Marilyn was in the bedroom.”

Monroe died just three months later. President Kennedy was assassinated late the next year.

In her new book, MacLaine also shares a photo that implies that both JFK and RFK were up to no good.

Under a photo from 1984, she writes: “Here I am telling Teddy Kennedy that story… and he’s laughing about how the boys got away with it all the time.”

MacLaine isn’t the first to allude to the Kennedy brothers, who were both involved with Monroe the night they recorded “Happy Birthday, Mr. President” sang.

In her new book, ‘Don’t Ask: The Kennedys and the Women They Destroyed’ former Post columnist Maureen Callahan claims that Marilyn had sex with Robert in her dressing room 30 minutes before Marilyn sang for JFK.

“They spent 15 minutes alone together,” Callahan writes in her book.

She claimed that the actress arrived on stage “drunk and flushed from the transgressive sex she had just had with Bobby (Robert), her dress so tight she could barely walk.”

Callahan further claimed that First Lady Jackie Kennedy was “enraged” after the performance, leaving JFK “slack-jawed” in the audience.

The author wrote to Jackie and then gave her husband an “ultimatum.” She forbade him from seeing Monroe again, saying, “She would divorce him – take the children with her and cost him a second term (in the White House).”

However, according to Callahan, Monroe’s relationship with RFK continued.

RFK even reportedly visited Monroe the night she died at her Los Angeles home: August 4, 1962.

“The FBI and CIA, Bobby and Jack discovered, had tapped Marilyn’s home and phone line without her knowledge…Bobby didn’t leave without the tape recordings,” she wrote.

Meanwhile, the Kennedys aren’t the only politicians MacLaine writes about in her new book.

The ‘Terms of Endearment’ legend revealed a ‘scary’ encounter she had with Donald Trump.

“Probably in the 1980s I had contact with Donald Trump,” she wrote. ‘I was at a party and when he came in he saw me and straightened up. He started pulling at his tie, and I could immediately tell that he was mentally starting to take off my clothes… and his.”

“It was scary how clear he was,” MacLaine claimed. “He even figured out a way to keep me from leaving, but I had to get out of there.”