Actress and model Cara Delevingne showed up at the Met Gala last night wearing and outfit with “Pet the Patriarchy” emblazoned on the front (and if you don’t know what that means, just don’t use your work computer when you look it up):

But in a hilarious twist, artist Luna Matatas says she owns the trademark to “Peg the Patriarchy” and she accused Delevingne of using it without her permission.

“So just came here to say, proud day for subverting the patriarchy when my art makes it to the #MetGala,” she tweeted:

Matatas sells merchandise with that slogan on her website, too:

And her pinned tweet is all the way back in 2016:

Shouldn’t Delevingne, at the very least, buy a T-shirt?