Rihanna Made a Mind-Blowing Cameo During Kanye West's FYF Fest Performance

The baddest pair in music didn't disappoint.

If we want anyone to crash our party, it's Rihanna—so it's no surprise that Kanye West (who filled in for Frank Ocean last minute) brought RiRi out onstage from the crowd during  his FYF Fest 2015 performance over the weekend in L.A.

Naturally, the cameo was a slam-dunk, with the pair performing their biggest collab tracks, "FourFiveSeconds," the first single off of RiRi's new album featuring Paul McCartney, as well as 2010's "All of the Lights." But we'll just let the footage speak for itself...

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