Order of the Most Holy Annunciation

The Order of the Most Holy Annunciation (OMHA) [1] (Latin: Ordo Sanctissimae Annuntiationis), also known as the Turchine or Blue Nuns, as well as the Celestine Nuns, is a Roman Catholic religious order of contemplative nuns formed at Genoa, Italy, by Blessed Maria Vittoria De Fornari Strata in honour of the mystery of the Incarnation of Christ .

[2] Pope Clement VIII approved the religious order on 5 August 1604, placing it under the Rule of Saint Augustine.

In 1676 the Venerable Princess Donna Camilla Orsini Borghese founded a convent on the Esquiline Hill near the Basilica of Saint Mary Major.

After the convent was sequestered by the state in 1873, their church, it:Chiesa di Santa Maria Annunziata delle Turchine, became part of a military establishment making uniforms for the army.

Some nuns engage in sewing vestments and religious habits to provide the necessary support for the community.