LOS ANGELES — Whitney Houston is the latest addition to the world of Barbie. The El Segundo-based toy company is honoring the late pop star with a new Barbie Signature doll. The Houston doll wears a lilac-hued tank dress, colorful drop earrings and vibrant eye makeup, and comes with a microphone stand. Barbie is proud to honor her extraordinary legacy with the latest addition to the Barbie Signature Series,” Mattel Vice President and Head of Barbie Nathan Baynard said in a statement. “The new Whitney Houston Barbie honors a woman whose voice, grace, beauty, and spirit inspired generations around the world,” Pat Houston, the executor of Houston’s estate, said.