Lucia Bosé, an Italian actress in neorealist films of the 1950s who walked away from her career to marry the Spanish bullfighter Luis Miguel Dominguín, only to return to acting after they separated, died on Monday in Segovia, Spain. She was 89.

Her death was announced on social media by her son, the singer and actor Miguel Bosé. Roberto Liberatori, who wrote a 2019 autobiography of Ms. Bosé, said the cause was pneumonia.

After she won the Miss Italy beauty pageant in 1947, Ms. Bosé traveled to Rome and drew the attention of the directors Michelangelo Antonioni and Giuseppe De Santis. In 1950 she appeared in De Santis’s “Under the Olive Tree” and Antonioni’s first feature film, “Story of a Love Affair.”

One of her most prominent parts was as Clara, a would-be actress who marries a film producer played by Gino Cervi in Antonioni’s “The Lady Without Camelias” (1953). The producer’s jealousy drives Clara into a film that ultimately bombs.