The argument began when the MTV VMA nominations were announced and Nicki's video for "Anaconda" was left out of the Video of the Year category.
She went on to post this tweet, which seemed to single out one particular nominee, in the shape of Taylor Swift, who'd been included in the category for her video for "Bad Blood".
Despite many people seeing Nicki's tweet as a comment on the apparent structural racism of the music industry, Taylor took it personally and responded.
Nicki replied, telling Taylor the comment wasn't about her.
Last night, Katy Perry got in on the fight, siding with Nicki. But now Taylor's BFF, Ed Sheeran, has weighed in to defend his pal, saying he doesn't believe she's done anything wrong.
He went on to say that Nicki's implication about race was a "redundant argument".
"I think the Minaj point is a bit redundant," he said. "Her point is that you have to be skinny and white to get a Video of the Year nomination, but Beyoncé's '7/11' is in there, and that is celebrating the female figure in every form."