Just wanted to share:
Nylon Mag had a romper tutorial and Behindtheseams was nice enough to share and scan along with instructions on how to make the romper.:) (It took me a minute to figure out the tutorial but I think I get it know. I think you're supposed to use a pair of boyshorts to trace, not bikini briefs. You'll get what I'm babbeling on about after you check it out).
It's probably the easiest tutorial... EVER!
So get thee a nighty slip asap.
Check it out here: http://theseams.blogspot.com/2009/04/quick-update.html
... and here is ANOTHER one made from 2 t shirts: