Attending wedding parties in which there are objectionable things (munkaraat)
Question

                Is it permissible for a woman to attend a wedding party if there will be some things which go against sharee’ah, such as playing music and dancing to it, or revealing clothes. Will her guardian such as her husband or father be guilty of sin if he gives her permission to attend this party? What is the ruling if the invitation comes from a relative and if she does not accept it there is the fear of a breakdown in family ties? Please advise us, may Allaah reward you with good.
Praise be to Allah.If 
          the parties are as described in the question, it is not permissible 
          for anyone to accept the invitation, unless he or she is able to remove 
          the evil things (munkar). In that case it is obligatory to accept the 
          invitation for the purpose of removing the evil. But if he is not able 
          to do that, then it is not permissible to attend these celebrations 
          which include all or some of these things which go against sharee’ah. 
          And it is not permissible for anyone to allow his wife or daughter or 
          other female relative under his guardianship to attend these parties. 
          If he says, I am afraid that there will be a rift between me and my 
          relatives or that the ties of kinship will be broken, we say, then let 
          that happen, because when they disobeyed Allaah by having parties of 
          this kind, there is no duty to accept their invitation. If they then 
          break the ties, the sin is on them and there is no sin at all on the 
          one who refused to attend these celebrations.