I made this a few years ago and was hesitant to upload them here since I lost the original pattern I made. Thanks to the Cirque Du Bebe's post I now have a  pattern to share!

This is a version I did with a triangular side slit at the bottom to do a color block in navy. I did another post with no change to the pattern.

I made this back in college when I was a textile/fashion major so I got a roll of procoated white nylon lycra fabric at this wonderful supply place called Jacquard Fabric. If you have access to a large format printer with fabric ink it is the most magical thing in the world - they have an option for a 6 foot sample for $35 which is plenty if you are just plannning to make one thing!