Why? Because of this questionable video of Selena at the shops.
The video shows Selena Gomez shuffling magazines around on a stand, so her new Vogue cover is front and centre on every row. In the meantime, she's covered Ariana's Cosmopolitan cover.
As expected, fans had a lot to say about it...
We highly doubt that Selena was intending to start any beef with queen Ari, and to be fair, it is her very first Vogue cover, so, she may be excused.