Do nuns go through Holy Order?

Yes, nuns do go through Holy Orders. Holy Orders is the sacrament through which a person is ordained as a deacon, priest, or bishop. Nuns are ordained as deacons, and therefore go through Holy Orders. During the ordination ceremony, the nun makes vows of poverty, chastity, and obedience, and is given the stole and dalmatic, which are liturgical vestments. The nun is then anointed with chrism, which is a sacred oil, and is given the Book of Gospels.