Sash
A wide band of cloth worn across the body — a visible marker of office, ceremony, or allegiance.
A sash in a dream is the dream's image of a visible marker of office, ceremony, or allegiance worn across the body. The sash is not part of the clothing; the sash is information added on top of the clothing. The dream brings the sash when something in your life — a public role, a graduation, an inherited title — is being announced by a deliberate visible mark. A sash worn correctly at the right occasion is the dream affirming the recognised role. A sash worn in private with no one to read it is the dream noting that the public marker has been kept and the public has been removed, and the symbol is doing its work only for the wearer.