Kat DeLuna is an American Pop and R&B singer. Kat DeLuna attends the Christian Siriano Fall 2010 fashion show during Mercedes-Benz Fashion Week at Bryant Park on February 12, 2010 in New York City. Kat DeLuna is the girl next door, no matter where you're from. To say she's a crossover artist is an understatement. Hip hop, R&B, merengue, pop, Spanish jazz, ballads, and dance, she does it all; in English and Spanish.