It samples Beyoncé's "Diva" and the beat from "Run The World." Several of its lyrics make it clear that this is something of a tribute to Bey.
Including: "I woke up like this. I went to bed like this. We do everything just like this."
And, more obviously: "Flawless bitches say, hey, what's up M.I.A.? It's for the women and, of course, Beyoncé."