1 Corinthians 11:6

For if the woman be not covered, let her also be shorn: but if it be a shame for a woman to be shorn or shaven, let her be covered. (KJV)

Then: Paul resorts to the common everyday culture to reiterate his main desire -- worship must give honor to God. Probably using Islamic practices today, Baker (p. 161) conjectures and explains a possible problem. Women were used to wearing nothing on their heads at home, but now the whole church was coming to worhip there. Hayes (p. 185) discusses Roman/Greek clothing styles in which women never wore veils, but they did wear their hair bound. Women who left their hair loose may have been considered to be "loose" (prostitutes) with lifestyles normally set up to honor temple gods and goddesses. Adding to the confusion was women's new liberty in Christ. Someone needed to give guidance.

Now: Believers keep looking for the principle in the verse. They sense Paul's sarcasm that, of course, women don't want to be bald. Any who deal with the effects of cancer treatment suffer thereby. They also know that western culture no longer uses head coverings as a means of identifying an individual's morality. It is easy to see Paul's greater teaching about shame; however, the principle is difficult to find - especially since verse eleven begins with "nevertheless" and seems to reverse all that he just said.

Extra source: Cornerstone Biblical Commentary 1 Corinthians (William Baker), 2 Corinthians (Ralph Martin & Carl Toney), ed. by Philip Comfort. Carol Stream: Tyndale House Publishers, c2006.
First Corinthians by Richard B. Hayes (John Knox Press, 1997) on line at http://books.google.com/books?id=M_PC0PAs3VYC&dq=1+Corinthians+and+Richard+B.+Hays&printsec=frontcover&source=in&hl=en&ei=2oPcStDCIIvf8Aaq0Ki3BQ&sa=X&oi=book_result&ct=result&resnum=11&ved=0CCMQ6AEwCg#v=onepage&q=1%20Corinthians%20and%20Richard%20B.%20Hays&f=false