The wearing of earrings by women (or even men) was a common OT custom and nowhere does the Bible condemn this practice (Ex 32:2,3; Num 31:50; Jdg 8:24; SOS 1:10,11). So although the Bible does not specifically address body piercings as a sin, an important Scriptural principle where the Bible does not specifically address an issue is that, if there is room for doubt whether it pleases God, then it is best not to engage in that activity. We should also consider the motive for desiring a body piercing: is it to find identity with a group, because of peer pressure, or to draw attention to myself? The Bible stresses the inner qualities of godliness are of greater worth than outward looks.
Modesty, decency and appropriateness should be characteristic of all Christian men and women and biblical advice, (specifically to women), is to dress and adorn themselves as befitting for children of God (1 Tim 2:9,10; 1 Pet 3:3). We are to bring glory and honour to God, by not doing anything out of vain conceit, rebellion or sensationalism, knowing the Lord looks at our heart (1 Sam 16:7; 1 Cor 10:31; Phil 2:3). A wise principle to live by is not to do anything that would cause a weaker Christian to stumble (1 Cor 8:9; Gal 5:13). We should also observe the lifestyle exemplified by those who adopt any particular custom, and not succumb to peer pressure to do the same without reflection. So, while the Bible does not expressly forbid having body piercings we should consider our motivation, remembering that as we are redeemed people, indwelt by the Holy Spirit, our goal should be to increase in godliness rather than external embellishment (Prov 16:2; 1 Cor 6:20; 2 Cor 5:20).