Which preposition to use with stomachers

of Occurrences 6%

On her head was a beautiful little tiara of diamonds; a diamond necklace, and a stomacher of diamonds, worth three score thousand pounds, which she is to wear at the Coronation too.

under Occurrences 2%

The stomacher under the cuirass which enclosed it is filled with a hot flood.

at Occurrences 1%

That before every fresh Servant, she be oblig'd to appear with a new Stomacher at the least. III.

Which preposition to use with  stomachers