Abstract: The interlocking apparel closures for closing slits or plackets in clothing have a first part attachable to one side of the placket (such as a collar, cuff, pocket, pants flies, skirts, etc.), the first part having at least one pair of spaced apart, parallel rails, each rail terminating in a bead lip, the bead lips opposing each other and narrowing the mouth of the channel defined by the parallel rails. The interlocking apparel closures have a second part attachable to the opposite side of the placket opening, the second part having at least one rail terminating in a bead head, the bead head being insertable between the bead lips of the first part to form an interlocking apparel closure. In use, the second part is pressed or snapped into the first part to close the placket.