Costanza Maria Teresa Ida Clotilde Giuseppina Pallavicini Pascolato was born in Siena, in the Italian region of Tuscany on 19 September 1939.

She moved to Brazil at the age of five as a result of her parents' decision to leave Italy towards the end of World War II, following the overthrow of Benito Mussolini’s fascist government, in which her father had played a role.

[1][2][3] In 1962, Pascolato married banker Robert Blocker, a Brazilian son of Americans.

After the separation, she began her career as an editor and fashion consultant at the magazine Claudia, where she worked for 17 years.

She has written three books: O Essencial (1999), giving tips on fashion and style; Confidencial – Segredos de Moda, Estilo and Bem-Viver (Confidential – Secrets of Fashion, Style and Living Well - 2009); and Meu Caderno de Estampas (My Book of Prints - 2015), which reproduces prints of designs by her company, Santaconstancia.

With Milly Lacombe, she wrote Como Ser uma Modelo de Sucesso (How to be a successful model) in 2003.