Together with big sister Penélope, Mónica Cruz, 32, is enjoying her second year as clothing designer for Spain-based retail chain Mango. The Spanish actress also has three movies in the pipeline for 2009. So how does this jet-setting mogul stay so stunning? Good looks clearly run in the family, but so does good advice: “My mother’s a hairstylist, and she taught us to use olive oil to hydrate and add shine. I still do it.” Here are a few more clever tips.