The rivalry between Taylor Swift and Billie Eilish - or at least their fanbases - has been vociferous in recent times.
Many Swifties took it as a personal sleight against their heroine, for example, when Eilish recently joked that musicians who play for 3+ hours are "psychotic".
And although Swift has the likes of Stevie Nicks in her corner, another music legend has come out as a fan of Eilish.
Sonic Youth's Kim Gordon recently spoke about Swift in an interview with The Guardian, when she was asked what her 'most controversial pop culture opinion' was.
She replied: "I don’t know if it’s controversial but I’m not really a fan of Taylor Swift. I couldn’t tell you what her music sounded like, actually. When it comes to pop icons, I would choose Billie Eilish."
It's safe to say that Gordon will not be seen in the famous 'white tent' at Swift's Eras tour, rubbing shoulders with other celebs and the ubiquitous Travis Kelce.