Born in Phoenix, Arizona, Valetta began modeling at the age of 15. A year later she was signed as the face of Calvin Klein’s Eternity fragrance. She has appeared in the campaigns of designers such as Giorgio Armani, Gucci, Versace, Elizabeth Arden, Prada, Calvin Klein, and Fendi. She is also active as an actress and has appeared in many films. She is currently married to athlete Christian McCaw and has a son with him.