3/$30 Studio by Liz Claiborne Hankerchief Hem Lined Skirt

3/$30 Studio by Liz Claiborne handkerchief hem lined skirt. Olive green and plum. No size or fibre content label. Measures approximately 18" across at waist. As shown, seam has come apart under the side zipper. Looks like an easy fix, but I don't sew