Our newest pencil skirt, Penelope is a thicker stretchy ponte fabric, with a thicker elastic waist. (no slit) Runs small, so definitely size up. 

Small (waist 26"/hips 32"/length 24.5")

Medium (waist 28"/hips 34"/length 25")

Large (waist 30"/hips 36"/length 26")

XLarge (waist 32"/hips 38"/length 26.5")

1XLarge (waist 34"/hips 40"/length 27")

2XLarge (waist 36"/hips 42"/length 27.5")

3XLarge (waist 38"/hips 44"/length 28")