Thou Art All Fair

"Blessed art thou, O Virgin Mary, by the Lord the most high God,
above all women upon the earth. Thou art the glory of Jerusalem,
​thou art the joy of Israel, thou art the honor of our people."
- Gradual for the Immaculate Conception (Judith 13:23)

"We declare, pronounce and define that the doctrine which holds that the Blessed Virgin Mary, at the first instant of her conception, by a singular privilege and grace of the Omnipotent God, in virtue of the merits of Jesus Christ, the Savior of mankind, was preserved immaculate from all stain of original sin, has been revealed by God, and therefore should firmly and constantly be believed by all the faithful...." 
- Proclamation of the Dogma of the Immaculate Conception by Pope Pius IX

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Tota Pulchra Es

Tota pulchra es, Maria.
Et macula originalis non est in Te.
Tu gloria Ierusalem.
Tu laetitia Israel.
Tu honorificentia populi nostri.
Tu advocata peccatorum.
O Maria, O Maria.
Virgo prudentissima.
Mater clementissima.
Ora pro nobis.
Intercede pro nobis.
Ad Dominum Iesum Christum.

Thou art all fair, O Mary and the original stain is not in thee. You are the glory of Jerusalem, you are the joy of Israel, you are the honor of our people. You are an advocate of sinners. O Mary, Virgin most intelligent, Mother most merciful. Pray for us, Plead for us, To the Lord Jesus Christ.

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'I will put enmities between thee and the woman.' In these words the Immaculate Conception of the Blessed virgin Mary was announced to our first parents. It was to be the reversal of the friendship with the serpent contracted by Eve, when she listened to his voice and fell under his power. The second Eve was never to be under the power of the devil; the enmity between them was to admit of no possible exception. This involved the grace of being conceived immaculate. Mary's Immaculate Conception was the foundation of all her graces. The absence of any stain or spot of sin distinguished her from all the rest of mankind. It distinguished her from the holiest of the Saints, since they, one and all, were sinners. Her perfect sinlessness was the source of all her glory and all her majesty; it was this which opened the door to the unlimited graces that she received from God; it was this that qualified her for her divine maternity, and raised her to her throne as Queen of heaven."  - The 1962 Roman Missal

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​"O Queen conceived without original sin, pray for us, who have recourse to thee."

​Photocredit: Fr. Lawrence, OP