Q: Are there any liturgical directives or rubrics that prescribe specific prayers for clergy to recite while vesting?
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A: There are none. These were removed from the missal after the council. Today, you are simply expected to put on the vestments you need. Still, I try to do so mindful of the reason I wear them.
I’m not sure why this changed. Certainly there has been a focus on the texts pertaining directly to the liturgy and not to devotions.