Why Roll Up Your Skirt?

Kelly Rowland (of Destiny's Child) continues to promote her solo album and made an appearance at Mtv's TRL on Monday, March 26 ('07). I don't get why the designer of that denim skirt decided it would be a good idea to "cuff it" or roll up the bottom. It looks silly. If you want a shorter skirt - may I suggest cutting off an inch or two then hemming it. Sheesh.