Toymaker Mattel has hired a team of interior designers to create three “dream houses” — in New York, California and India — for Barbie and will announce its choice in August. One of the sets is a luxury penthouse overlooking Central Park, designed by Celerie Kemble. “Barbie is a strong, independent woman. She belongs in New York!” Kemble said. “Manhattan is the best of the best for Barbie.”