Jessie J says Jay-Z has the "softest hands".
The British singer and the hip-hop star both performed at BBC Radio 1's Hackney Weekend in the UK.
Jessie revealed she is a big fan of the superstar, but not in the way you might expect.
"I saw Jay-Z at a gig last year, and he's just so cool. He also has the softest hands I've ever shaken," she told BBC Radio 1.
The Domino singer performed hits from her debut album Who You Are during her set.
Jessie revealed that not being as active on stage has its advantages.
"I don't get as sweaty as I used to," she explained. "Probably because I don't move around as much… Maybe I'm not as good as I used to be."
The singer has had a whirlwind year, with the huge success of her album and appearing as a judge on the UK version of The Voice. She's continuing her tour across Eastern Europe and will be writing new material while on the road. Her new album could be released as early as the end of this year.
Yet despite her success, Jessie confessed she still gets nervous when performing at festivals.
"I really enjoy myself, but it is scary without a sound check. You have to check your sound levels as you're performing!" she explained.