Maria Cristina Gaioni, a talented actress and model, was born in Milan, Italy, to painter Adriano Gaioni, who passed away in 1965. Gaioni's early life was marked by a strong interest in the performing arts, which led her to enroll in drama studies at the renowned Piccolo Teatro in Milan, under the guidance of the esteemed theatrical impresario Giorgio Strehler.
Following her studies, Gaioni began her film career as an extra, making her debut in the 1958 film "Tempest", a historical drama that told the story of the Pugachev rebellion during the reign of Russia's Catherine the Great. Her early success in the film industry led to leading roles in several notable films, including the prison drama "...and the Wild Wild Women" (1959),the bittersweet comedy "Arrangiatevi" (1959),and the mystery thriller "The Facts of Murder" (1959),for which she won a Silver Ribbon Award as Best Supporting Actress.
Gaioni's early success earned her the nickname "the Italian Brigitte Bardot", due to her striking resemblance to the famous French actress. Her subsequent roles included a strong performance in Elio Petri's directorial debut, the crime thriller "L'assassino" (1961),alongside Marcello Mastroianni. However, Gaioni's career began to slow down, and she was relegated to routine programmers, genre, and exploitation films.
In the late 1960s, Gaioni became a part of Rome's social circle, befriending the singer Patty Pravo and marrying the keyboardist of her backing band, Alberto Visentin.