Low poly - High Poly processs

[Excella Deluxe]

Hello all, please i need your help about the process of low poly and high poly clothing begore to rigging with a video tutorial. I know about one on youtube or vimeo i dont remember that make a dress an sculping in blender a later create the high poly... Any have this tutorial where I can found?? Maybe is for more 5 years old THANKS or other new tutoria is well

[Kyrah Abattoir]

I do it the other way around usually, first I model my high poly, and then I create a low poly model by hand with surface magnet mode active.