The present invention aims to provide a wearing article improved to prevent an undesirable step from being formed due to downward displacement of a front end flap of an absorbent chassis during use of the diaper, to prevent body waste from leaking out and to assure a good appearance. At least the front waist region of the front and rear waist regions includes elasticized regions extending at least in the transverse direction Y, wherein the elasticized regions comprise a first elasticized region defined between a waist-opening peripheral edge a and the vicinity of a front end flap of the absorbent chassis so as to extend in the transverse direction Y, a second elasticized regions defined adjacent the first elasticized region so as to extend in the transverse direction Y and a pair of third elasticized regions defined adjacent the second elasticized region and spaced from and opposed to in the transverse direction Y on both sides of a non-elasticized region formed in a transverse middle of the front waist region wherein the second elasticized region extends across the front flap of the absorbent chassis.
