While all of that might seem innocent, it pretty much goes against the girl BFF code. In case you didn't know, Ellie's supposedly good pals with Taylor Swift. There's only one problem with that...Taylor pretty much hates Katy. Oh, and Lorde is supposedly Tay's BFF, too!
So was there more behind the pic than just reminiscing? Only Ellie knows. But, we say yes. Ellie reportedly cheated on Tay's friend Ed Sheeran a few months ago. Maybe T-Swift was somehow involved in that drama...or picked sides?
In that recent interview with Rolling Stone, Taylor revealed that her new song "Bad Blood" is about her enemy in the business. Katy basically confirmed that's her when she tweeted in response, "Watch out for the Regina George in sheep's clothing..."
Whose side are you on?
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Gallery | Taylor Swift's Famous BFFs