I was able to pick up some cute socks for a dollar at the BX. For those of you not in the military the BX is like a Walmart or Target with better prices but less of a selection. The first thing you need to do to make the leg warmers is cut off the foot part of the socks. I cut mine a little higher than I normally would - you will see way in a moment.
Now you can finish the ends one of two ways. You can fold them under and sew a nice seem at the bottom them OR you can make the ruffly and cute. Since I am a sucker for ruffles I went with the second option. To make the ruffles you want to switch you machine to the tightest possible zig zag stitch and sew around the ends of the fabric. Keep the fabric tight but do not pull it through the machine. The zig zag stitch will create the ruffles as you go along.
Now back to those feet you cut off the socks. I saw a fabulous idea on . She took the feet of her socks and made them ruffly and adorable. I hate to waste fabric so I had to give these cutey ruffled socks a try. To make the socks you are going to finish the ends the same as the leg warmers. Just run a tight zig zag stitch along the top of the socks to create the ruffles.