Nuns and Vestal Virgins cut off their hair.

[Evang.Benincasa]

Cambridge Bible for Schools and Colleges

15. it is a glory to her] The true glory of every creature of God is to fulfil the law of its being. Whatever helps woman to discharge the duties of modesty and submissiveness assigned to her by God is a glory to her.

for her hair is given her for a covering] A mantle, or cloak. Literally, something flung around the body. It is worthy of remark that the Vestal Virgins at Rome wore their hair short, or confined by a fillet. They may, however, have been regarded as protected by their sacred character.

The video shows how Catholic Nuns, I guess the modern Vestal Virgins of the Roman Empire are initiated into the modern Temple of Rome.

[Amanah]

the girls in the video are sweet, sadly they are deceived.

[votivesoul]

Many Hasidic and Orthodox women do, too. Some just wear shawls afterward, or wigs.

Imagine getting married to a beautiful Jewish women then going home and watch as she pulls her shawl or wig off?

That may be culturally insensitive on my part, but man, I wouldn't like it one bit!

[Evang.Benincasa]

That's why the English word "long" is questionable.

It is predicated upon what it is measured against.