The question of whether showing one's neck is considered haram (forbidden) in Islam is complex and depends on various factors, including the specific context, cultural norms, and individual interpretations of Islamic teachings.
Generally, Islamic modesty guidelines encourage both men and women to dress modestly, covering their bodies and avoiding revealing attire. While there is no explicit mention of the neck being specifically forbidden, some interpretations suggest that it is part of the body that should be covered, particularly for women.
However, it is important to note that there is no universally accepted consensus on this matter. Some scholars argue that covering the neck is not mandatory, while others emphasize its importance.
Ultimately, the decision of how to dress and what to cover is a personal one, guided by individual understanding of Islamic principles and the specific context.
It is advisable to consult with a trusted religious scholar or Imam for guidance on this matter.