You can Google the sculpt and the word measurements. A lot of the time, they fit into a category. Mini, yo-sd, msd, and SD (13 or 17). Many clothing manufacturers will list their measurements when you look to buy them.
For instance, I have a BBB meI sculpt, which helps me narrow her to an msd size based on height. I can tell, however, that her waist is smaller than a normal in mad, so she is a slim. I also have a soom dune girl who is a normal, bigger-waisted girl.
I hope this helps a bit!