See 1 Tim. 2:9 & 10. "In like manner also, that women adorn themselves in modest apparal, with shamefacedness and sobriety; not with broided hair, or gold, or pearls, or costly array; but (which becometh women professing godliness) with good works."
Also see 1 Pet.3:3 & 4. "Whose adorning let it not be that outward adorning of plaiting the hair, and of wearing of gold, or of putting on of apparel; but let it be the hidden man of the heart, in that which is not corruptible, even the ornament of a meek and quiet spirit, which is in the sight of God of great price."