The 'R.I.P' singer told The Mirror that her mum often tells the rapper and his wife Beyoncé stories about when she was little.
"My mum is so embarrassing around Jay-Z and Beyoncé," she explained. "She starts talking about when I was a baby and my nappy rashes!
"When they first met, my mum said to Jay, 'Are you the one who sang you've got 99 problems and a bitch aint one?'
"He said, 'Yeah', and my mum goes, 'You've got the baddest bitch', and points at Beyoncé. After that it was, 'See ya later Rita' and it was all about my mum and Jay."
Ora made her X Factor debut last night (August 25), stepping in as a guest judge during the London auditions.
The 21-year-old singer's latest single 'How We Do (Party)' reached the number one spot in the British charts last Sunday (August 19) and her debut album Ora is released in the UK tomorrow.
Watch Rita Ora talk to Digital Spy about her forthcoming album below: