I found the best pj pants at the dump, yes I'm a dumpster diver, and just HAVE to make a dress out of it. Skirts are fun but with a dress you don't have to worry about a top to go with it and the pattern has this lovely and truly bizarre pin up style girl who's sitting by a fireplace but in the woods....

Anyway, they're a super lightweight flannel (brushed on both sides yum!) and HUGE. The tag says L but my sister wears 2X and fits into them so I'm sure I can make some kind of dress. OK, I'll stop spewing and get to the point, I understand how to make a skirt from pants, but I'm not sure how to translate that into a dress. Any suggestions?
*edit*
I obviously dreamt about this last night because when I woke up this morning, it was the first thing I thought about. So I'm thinking of making the style like this dress from anthropolgie:
and I have a pillowcase (from same dump heehee) with stripes that will coordinate/clash wonderfully. feedback?