Mahīśāsaka Vinaya
Bhikkhunī Vibhaṅga
Confession 157
Origin Story
At that time, the bhikkhunīs wore corsets to make their fat or thin bodies become average. Sexual desire arose in their minds. … “I now lay down a precept for the bhikkhunīs, as explained above. From now on, this precept should be recited thus:
Final Ruling
‘If a bhikkhunī wears a corset, it’s a pācittiya.’”
Explanations
For a sikkhamānā and a sāmaṇerī, it’s a dukkaṭa.
The non-offenses are as above.