14 Dec Actress Rita Moreno accepts the Screen Actors Guild Life Achievement Award onstage during the 20th Annual Screen Actors Guild Awards at The Shrine Auditorium on January 18, in Los Angeles, California. . (CNN) Here's a look at the life of award-wining actress, singer and dancer Rita Moreno. 25 Feb Born Rosa Dolores Alverio on December 11, , in Humacao, Puerto Rico, Rita Moreno is best known as Anita in West Side Story in , a role that earned her an Oscar for Best Supporting Actress, making her the first Latina actress to win the honor. Moreno also appeared on the children's shows. Rita Moreno has had a thriving acting career for the better part of six decades. One of the very few performers (and the very first) to win an Oscar.