A picture is worth a thousand words.
These photos will clarify some of my comments regarding clothes exchanges between the Mixis dolls and other playscale dolls and action figures. Why I recommend NOT lending Mixis tanks to Ladies Mission figures and Perfect Body female figures and why the Get Set Club dolls cannot wear the Mixis cloth pants. These photos show from left to right:
Aoshima/Skynet Ladies' Mission action figure, BBi Perfect Body action figure, YNU Group Mixis fashion doll, Get Real Girl action doll, Get Set Club fashion doll, and Jakks Pacific G.I.R.L. Force fashion doll*.
*Note: to date I have only found one Jakks Pacific G.I.R.L. Force doll [Kulture Shock Jaz] with this body that allows the doll to sit albeit with her legs spread wide. All of my other Jakks Pacific G.I.R.L. Force doll have the legs and hips as one piece that does NOT allow these dolls to sit. That's probably why you will find online scads of photos of re-bodied Jakks Pacific G.I.R.L. Force dolls.
If anyone has found another doll with this body, please let me know. Curiosity ;-D.