The Catholic Church already has a liturgical celebration honoring Mary as the "Mother of the Church" that began in 1975. Individual countries, dioceses and religious orders have also held Virgin Mary celebrations for longer periods of time — but Saturday's decree means the celebration will now apply to all of the Roman Catholic Church.
It's the latest official celebration that Francis has decreed to honor women involved in Jesus' life. In 2016, Francis declared the feast of St. Mary Magdalene.
Faith Matters - Women in the Driving Seat - Revolution at the Vatican