I think the questions should be, why do I want/need one? Our body is a "temple of the Holy Spirit" (1 Cor 6) - is it right for us to decorate it?
Also, if you are married, your body is not yours, but your spouse's - if your spouse asks you to do it, or, conversely, asks you not to, then you need to follow that request (after, perhaps, discussing).
I do agree with @El'endia Starman's answer that in the NT, God has not given a huge list of DO's and DON'T's - we are under grace and a law of liberty. I don't believe it can be dogmatically asserted whether it is "right" or "wrong", but rather is a matter of personal conviction in relation to God, your spouse, and the church.