This has been one of those "I must make!" projects! I saw this pin (http://www.pinterest.com/pin/114560384240946968/) very long ago and I almost never make something for me specifically. Well time to get to that!
I found this tutorial on Living Well Spending Less http://www.livingwellspendingless.com/2012/12/20/easy-to-sew-pajama-pants/#_a5y_p=729010. I decided to do one thing different because of the amount of fabric I had to work with.
The left edge is a fold instead of a cut, so each leg is only one piece instead of two.
I did the same when cutting the bottom cuff so there wasn't a seam along the outside.