The legendary Barbra Streisand has an all-star sense of humor! During a show at London’s Hyde Park on Sunday, July 7, the 77-year-old singer joked that she could have almost been a member of the British royal family if only those dating rumors about her and Prince Charles were true.

“If I had played my cards right, I could have been the first Jewish princess,” she laughed in front of everyone in the audience. On a big screen, Barbra showed a few photos of her and the Queen Elizabeth‘s eldest son together with a newspaper headline reading “Barbra charms her prince, Charles.”

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Apparently, rumors started to swirl that Barbra and the Duke of Wales — who had met on the set of Funny Girl in the 1970s — had an affair after he separated from his first wife, Princess Diana, and before he married his second wife, Camilla, Duchess of Cornwall. The two had crossed paths in the 1990s when Barbra performed at the Wembley Arena to help Prince Charles out with a charity function. “[They] had a secret rendezvous at the Bel Air Hotel that no one [knew] about,” author Christopher Andersen wrote in his book Game of Crowns: Elizabeth, Camilla, Kate and the Throne.

However, Barbra quickly cleared everything up once she took the stage at her London concert. While speaking to the crowd, she remembered what it was like for her to meet Princess Diana in person and how the young royal came across as someone whose very humble.

“After the performance, the protocol was for her to get up first, but she pushed me up and made me get up first,” Barbra recalled. “She was so kind.”

Princess Diana later passed away at age 36 in 1997, but even though she died so young, the late icon left a strong impression on the people who she came into contact with — especially her sons, Prince William, 37, and Prince Harry, 34.

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“She was our guardian, friend and protector,” Harry recalled about his late mother in an eulogy he shared on the 10th anniversary of her death. “She never once allowed her unfaltering love for us to go unspoken or undemonstrated. Behind the media glare, to us, two children, she was quite simply the best mother in the world.”

Can you imagine what the British royal family would have been like if Barbra became a member?!