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Valentina "MAMI" Grethel is a Colombian born and Los Angeles raised actress, singer, rapper, writer and dancer. Her mother is actress, model and TV host mother, Lianna Grethel and father is Colombian award winning actor Julio Echeverri, so Valentina fell in love with entertainment from a young age. The triple threat has been studying her passions with Hollywood's greatest acting teachers since her tween years. imdb.com