Abstract: An arched window multi-cellular or pleated fabric shade support device for holding the upper margin of the window shade in close proximity to the arch of the window. The device includes a base having orthogonally oriented upright and horizontal mounting surfaces each attachable to a side wall or a top surface of the arched window. The base also has an elongated cavity. A first clip member has an elongated support shaft extending in either direction from one end of a first support tab, a first end of said support shaft sized for releasable insertion into the cavity. A second clip member has a support tab and an aperture formed through one end thereof sized for releasable dependent attachment over a second end of the support shaft. The first and second support tabs are positioned in closely spaced relation one to another for supportive attachment with an upper margin of a fabric sheet or panel of the window shade.