Has an older brother, Carlo Borromeo. Through him she has a sister-in-law, Italian fashion designer Marta Ferri. Carlo and Beatrice's grandmother, Marta Marzotto was a fashion designer too.
Has three older half-sisters from her father's first marriage to German model Marion Zota: Isabella (b. February 3rd, 1975), Lavinia (b. March 10th, 1977) and Matilde (b. August 8th, 1983).
Daughter of Carlo Ferdinando Borromeo, Count of Arona (born on December 8th, 1935) and his second wife, countess Donna Paola Marzotto (born on May 25th, 1955).
From her father's side she is related to San Carlo Borromeo, who was the cardinal archbishop of Milan from 1564 to 1584.
She has interviewed many important people; among them Roberto Saviano and Italian politician Marcello Dell'Utri.