Sniff around in 1 Corinthians 11 (where it speaks of a woman needing to have her head covered or have long hair to be honorable [and, likewise, for a man to have short hair, as long hair would be a disgrace]).
That is a great example of cultural relevance because, at the time of writing, the look of female prostitutes was to wear their hair short. Therefore, Paul is saying, and I'm paraphrasing, "DON'T LOOK LIKE A PROSTITUTE!!!".
Now, would this exist today? Perhaps if it was still the code of prostitutes to wear their hair short, but, thanks to those progressive non-theist prostitutes who pushed the boundaries by expanding their hairstyle options, Paul, if writing today, would have to modify his statements.