Can the first wife appeal if the court approves her husband's polygyny?

Yes, the existing wife is an interested party and can usually appeal against the decision. The right of appeal is provided in Act 303 section 23 and equivalent state enactments, according to Syariah court procedure. The notice of appeal must be filed within the set period, which is usually short, so seek advice from a Syariah lawyer or the Legal Aid Bureau immediately. The wife may also apply for other related orders, such as maintenance for herself and the children. In some circumstances, jointly acquired matrimonial property (harta sepencarian) can also be applied for. At the same time, consider counselling sessions to protect your own wellbeing. See women's rights.