"Sin Pijama" (English: "No Pajamas") is a song by American singer Becky G and Dominican singer Natti Natasha. It was written by the two singers, Nate Campany, Kyle Sherear, Rafael Pina, its producers Daddy Yankee and Gaby Music, and co-producers Mau y Ricky, Jon Leone and Camilo Echeverry. The song and its music video was released by Sony Music Latin on April 20, 2018. It became both Becky G and Natasha's third top 10 hit on US Hot Latin Songs and has reached number one in Spain as well as the top 10 in Chile, El Salvador, Guatemala, Honduras, Nicaragua, Peru and Uruguay. "Sin Pijama" was certified platinum in the US and surpassed 100 million views on YouTube/Vevo within three weeks of its release.