1 Peter 3:1 (KJV)

Likewise, ye wives, be in subjection to your own husbands; that, if any obey not the word, they also may without the word be won by the conversation of the wives;

While they behold your chaste conversation coupled with fear.

Whose adorning let it not be that outward adorning of plaiting the hair, and of wearing of gold, or of putting on of apparel;