Sastre's career started at the age of 12, when she was selected for a fast-food commercial with McDonald's. Her first movie appearance occurred in 1987 in El dorado by Carlos Saura. In 1989, she was awarded the look of the year by the Elite Model Agency group.1 At that point in her life she was offered to continue in the modelling business but she chose to continue her studies instead.
Sastre married Alexandro Corrias in 2006 and together they had a son, Diego. A little over a year later they mutually filed for divorce.citation needed
^ Raper Larenaudie, Sarah (March 13, 2006). "A Natural Choice When it came to shopping for a new face, Lancôme executives were taken with Daria Werbowy's earthy style. Here she models spring's soft, romantic silhouette in the new neutral palette" (in English). Time (Spring 2006): 66.