Prince William listens to Rebecca Ferguson's music when he runs.
The 34-year-old royal revealed to the pop star herself that he puts her albums on when he goes for a job, much to her delight, when he met her at a gala dinner in Shanghai last year.
She said: "I had a tough upbringing, so meeting Prince William was special.
"He told me he listens to my music when he runs and then asked about my kids."
Rebecca was shocked when William - who has son Prince George, three, and 17-month-old daughter Princess Charlotte with wife Duchess Catherine - asked about her children, Lillie and Karl, because she didn't think he would know who they were.
She added to Closer magazine: "I was stunned. I went home and said to Karl and Lillie, 'Guess what? Prince William knows who you are, how mad is that?' "
The brunette beauty performed for William and other guests at the gala dinner as part of the Great Festival of Creativity, and she admitted afterwards she was overwhelmed with emotion.
She tweeted: "Just performed for his royal highness and I got a little emotional I am not to proud to say I am extremely lucky and blessed come along way
"From where I was god has been kind xxx
"Had to leave my kids at home still I hope they will be proud of their mummy love you the world
"He has all the charm and grace and warmth as Diana what a lovely person I am honoured lovely memory for the grandkids (sic)"
Rebecca's performance was censored by a scrutinising committee which banned songs containing mild sexual references or religious connotations as they could be deemed offensive to local sensitivities.
Rebecca's spokesperson said at the time: "After our hosts had been through all Rebecca's song lyrics, we were asked to make sure she did not perform 'I've Got My Love To Keep Me Warm', 'Lover Man', or 'God Bless The Child'.
"They told us they loved 'Blue Moon' and 'Get Happy', and so she was happy to include those songs."