Method of manufacture of curly fibers

A process comprising

• forming fibers each having at least a first region and a second region wherein the first region comprises an ethyl ene/alpha olefin interpolymer composition characterized by a density in the range of 0.930 to 0.965 g/cm3, a melt index (12) in the range of from 10 to 60 g/10 minutes, wherein the 12 is measured according to ASTM D1238, 190C, 2.16 kg, a molecular weight distribution, expressed as the ratio of the weight average molecular weight to number average molecular weight (MW(GPC)/Mn(GPC)) as determined by GPC in the range of from 1.5 to 2.6, a tan delta at 1 radian/second of at least 45, a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure, and a full width at half maximum of the high temperature peak is less than 6.0° C. stretching the fibers to an elongation of at least 20% thereby increasing curl of the fiber.