Don't you just hate it when someone calls your BFF, their BFF?
Well, we're pretty sure that's how Taylor Swift was feeling after seeing the pictures of Katy Perry and Ellie Goulding partying the night away at the Universal and Soho House BRIT Awards after party last week.
Ellie and Taylor go waaaay back, with Ellie appearing in the Bad Blood video and even supporting Tay at her Hyde Park gig back in 2015 - she's a core member of the exclusive 'squad' we all pretend we don't but secretly really, really wanna be a part of.
It's also no secret that Taylor and Katy aren't exactly gal pals. They've got beef dating back to 2014, when Taylor admitted Bad Blood was about an 'enemy' who'd stolen back-up dancers. Then Katy responded by Tweeting Mean Girls references, and it all got very year nine if you know what we mean?
Speaking to heat, a friend of Ellie's has revealed that Katy has been looking to 'steal' Ellie away from Taylor and that Ellie and Tay aren't as close as they used to be.
"They haven't hung out in ages - I think Taylor doesn't like that Ellie has stayed close to Adam [Calvin Harris' real name].
"Still I don't think Tay will be pleased to see these pictures of Ellie and Katy."
Read the full story and see more pictures in this week's heat mag, out today!