If you dreamed that your sister had a baby: You should also give importance to your relationships, Other people's agendas may bother you. To see that your sister has a baby in your dream portends good luck. This is seen as a symbol of the joy and happiness that a person will experience, good developments that will happen to him, and his good fortune. Having a baby for your sister also signifies joy and happiness within the family, a celebration to be held soon, that your sustenance will expand, your level of welfare will increase, and your wishes will come true.