Verses with the word bonnets in the Old Testament (6 verses):

Exodus 28:40
And for Aaron's sons thou shalt make coats, and thou shalt make for them girdles, and bonnets shalt thou make for them, for glory and for beauty.

Exodus 29:9
And thou shalt gird them with girdles, Aaron and his sons, and put the bonnets on them: and the priest's office shall be theirs for a perpetual statute: and thou shalt consecrate Aaron and his sons.

Exodus 39:28
And a mitre of fine linen, and goodly bonnets of fine linen, and linen breeches of fine twined linen,

Leviticus 8:13
And Moses brought Aaron's sons, and put coats upon them, and girded them with girdles, and put bonnets upon them; as the LORD commanded Moses.

Isaiah 3:20
The bonnets, and the ornaments of the legs, and the headbands, and the tablets, and the earrings,

Ezekiel 44:18
They shall have linen bonnets upon their heads, and shall have linen breeches upon their loins; they shall not gird themselves with any thing that causeth sweat.