Mary Immaculate refers to the belief in the sinless conception of the Virgin Mary, the mother of Jesus Christ. According to this doctrine, she was conceived without original sin, making her pure and holy from the very beginning of her existence. This belief is celebrated in the Catholic Church and is known as the Immaculate Conception. The feast of Mary Immaculate is observed on December 8th each year. This day honors her unique role in salvation history and emphasizes her purity and grace. The doctrine was officially proclaimed by Pope Pius IX in 1854, affirming her special status among all saints and believers.