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The Furious 8 star looked like a music pro while taking the stage with Nicky Jam, who performed his new single "El Gander."
Diesel — who was dressed in white jeans, a black tank top, and dark sunglasses — came out from backstage as the reggaeton artist rapped the line: "Now I'm making movies with Vin Diesel."
The crowd seemed to love the cameo, loudly cheering for the 49-year-old actor as he rapped in Spanish.
¿Qué te pareció la sorpresa de la noche? @vindiesel en #Billboards2017