Abstract: A free size curtain frame for a two-piece curtain comprises: a pair of mounting brackets fixed to two side members of a windows frame respectively at a top; at least one telescopic tubular stretchable beam for fitting to the width of various windows, mounted on the mounting brackets for hanging a two-pieced main curtain thereon, a positioning clamp adjustably clamped on the beam near a middle having a magnet piece disposed at a lower side thereof, a couple of overlap guiding bars respectively hung on at least two hanging rings nearest to the positioning clamp from adjacent sides respectively having an iron piece disposed at an inner end of a flat portion toward the magnet piece of the positioning clamp, therefore to insure there will be a perfect overlap in the middle of the two-pieced curtain, a spare telescopic beam may also mounted on the mounting brackets for hanging a screen curtain if needed, an additional stretchable beam formed of a rectangular telescopic tube may mounted to a pair of attachable brack