I dreamt wearing a white wedding dress but it's my sister who was getting married and I was her bridesmaid. So as my sister was getting married, i saw her outfit was dull and old, then I asked her to undress because the outfit was not good for her wedding, then I took my white wedding dress off and gave it to her to dress up quickly because the wedding was about to start, then I took another dress to wear as her bridesmaid but the problem is that she is married in real life and the man that she was about to marry in the dream was her husband, what does this dream mean?