Question: At what age did the Mexican actress, singer and model appear on "Tu y Yo" with the 1978 winner of Miss Costa Rica?
Sentence (from "Lisette Morelos"): Lisette Morelos (] ; born Lisette Garcia Morelos-Zaragoza on May 21, 1978 in Mexico City, Mexico) is a Mexican actress, singer and model.
Relevant evidence: Yes