Dreaming of a gown or cloak is generally seen as a symbol of marriage or a wife who bears children. If the gown is made of cotton, it represents your good spiritual state. Such dreams point to significant relationships and family in your life. They remind you of the importance of maintaining connections with your family members and fulfilling your responsibilities towards them.
From Imam Muhammad Ibn Seerin's Dictionary of Dreams According to Islamic Inner Traditions â entry "Gown" (page 190) â resolved via the equivalent "Cloak" entry.
In a dream, a cloak represents marriage or a child bearing wife. If the
86 IBN SEERIN'S outside of it is made of cotton, it represents one's good spiritual standing. A cloak in the dream usually represents longevity, prosperity for the one wearing it and protection against a cold winter, that is poverty or the heat of summer, or heaviness in one's life caused by his wife, his spiritual life, his religious attendance, or it could mean a sickness, imprisonment, distress caused by a woman or the stress of war. If a wife sees herself wearing a cloak with the lining made of dark sable fur in a dream, it means that she will have a lover of an iniquitous character. (Also see Coat)
Note: Islamic dream interpretation depends on the dreamer's circumstances and state. This is a general guide drawn directly from the source book.