Whether a "boy cut" is haram (forbidden) for girls depends on whether the haircut resembles that of a man. According to Islamic teachings, it is haram for women to imitate men in their appearance.
Here's a breakdown:
- The key factor: Does the haircut make a woman look like a man?
- Reference: If a woman cuts her hair too short, so that it looks like a man's hair, then this is undoubtedly haram, because the Prophet (blessings and peace of Allah be upon him) cursed women who resemble men.
Therefore, if a "boy cut" is styled in a way that is distinctly masculine, then it would be considered haram. However, if the haircut maintains a feminine appearance, it would not necessarily be considered haram.