Hailee Steinfeld is fully on board with Bills Mafia.

During an interview for the February cover of “WhoWhatWear,” the Hollywood star was asked a series of questions which involved some football ones.

She knows her stuff… and knows how to burn the Bills’ rivals.

Asked to name the four teams in the AFC East, Steinfeld got all of them right… at least Bills Mafia will think so.

The actress named the Bills and then referred to the Dolphins, Jets and Patriots as “the Bills’ three sons.”

Shots fired.

The Steinfeld clip can be found below: