Disposable pant-type diaper having improved fitness to body

A disposable pull-on garment having a longitudinal center line, a front region, a back region and a crotch region between the front region and the back region, comprising:

• a chassis provided in the front, back and crotch regions and having edge lines in the front and back regions, the chassis including a liquid pervious topsheet, a liquid impervious backsheet associated with the topsheet, and an absorbent core disposed between the topsheet and the backsheet;
• a pair of extensible front ear panels extending laterally outward from the chassis in the front region and a pair of extensible back ear panels extending laterally outward from the chassis in the back region, each of the front and back ear panels having an outermost edge line and each of either the pair of front ear panels or the pair of back ear panels having a tear open tab at its laterally outward edge, at least one of the outermost edge lines having a nonuniform lateral distance from the longitudinal center line when the garment is in an unseamed flat condition;
• and
• seams joining the corresponding front and back ear panels in an overlapping manner along the corresponding outermost edge lines to form two leg openings and a waist opening.