A spacer to maintain separation between garments on hangers hanging on a clothes rod being a collar having a clam shell construction so that the spacer can be opening for attachment to, or removal from, the closet rod thereby avoiding the necessity of removing the bar from the closet. In preferred embodiment the spacer is generally cylindrical of diameter greater than the inner diameter of the coat hanger hook and having rounded ends to cause the hangers to rest on the rod. One or more hook retaining grooves may be included medially of the ends. Snap closure means secures the two hemi-shells closed. At least one of the shells may be decoratively configured, e.g. a Disney character or the like to appeal to children. The plastic may be color-coded or labeled.