Lots of good suggestions here, but I'm really loving Fabrickind's idea here!
Originally Posted by fabrickind
*only comes back when my Jojo cosplay help sense are tingling*
This version of Lisa Lisa isn't a skirt, but rather a romper with puffed shorts and a loincloth. Take another look around the legs of the reference pictures.
If you can find a pattern for pumpkin shorts of lolita-style bloomers, that would be on the right track for the bottom half. you can combine that with the top half of the pattern Digit suggested (or a similar style) and add the loincloth piece as a separate panel with a waist seam. If you don't want the waist seam, you'll have to do some fancier pattern combination. Let me know if that's the case.
I know you didn't ask on fabrics, but mystique spandex all the way on this one.
Unfortunately I haven't done this version, but I can tell you where I got my wig, if that's something you still need.
I actually bought a wig (on an impulse no less...lol) at NDK. Purple Plum Wigs was there and they had something I thought was absolutely perfect.
You're right about the romper being more of a shorts style, now that I look closer. I guess what I also had in mind was this cosplayer who also made Lisa Lisa and made the outfit sort of a mashup of the anime version and the figurine. I totally didn't notice that the outfit this cosplayer made isn't quite the same as the one in the anime. My bad!
I do not mind the waist seam though. I might decide to try your idea and mixing it with something similar to the pattern that. Elysium-Sans has a great pattern on her deviant art page that's giving me a better idea of how the outfit ought to look.
I actually had no clue about mystique spandex until you mentioned it, but having looked it up just now, it is STUNNING. Thank you, Senpai!