This brief paragraph reminds us that however close we hold the Blessed Mother in our hearts an piety, liturgy is still number one:
184. The relationship between the Liturgy and popular Marian piety should be regulated by the principles and norms already mentioned in this document(Cf. DPPL 47-59, 70-75). In relation to Marian devotion, the Liturgy must be the “exemplary form” (Cf. Paul VI, Marialis cultus, 1; CDWDS, Circular Letter Guidelines an proposals for the celebration of the Marian Year 7; Collectio missarum de beata Maria Virgine, Praenotanda, 9-18), source of inspiration, constant reference point and ultimate goal of Marian devotion.
The Directory on Popular Piety and the Liturgy is online at the Vatican site.
Catholic Sensibility 