What is the ruling on a husband's approval for his wife to remain at her brother's unmixed wedding party, knowing that male relatives will enter at the end of the party to share the groom's joy, with her commitment to wearing the hijab and not participating in dancing, solely to await a photo with her brother?

If there are no women displaying their adornment in the presence of non-mahram (definition) men, and the dancing is not immodest or provocative, then we hope there is no harm in that. It is not permissible for a woman to uncover her face in front of non-mahram men. Photographic and video recording are subjects of dispute, and it is better to avoid them unless there is a need. If permissibility is stated, then there is no harm in a woman being photographed with her brother if she is sure that non-mahram men will not see the picture.