Zee,
For the look that you showed in your first post, a gray or black backdrop and a single 4 X 5' soft box light source to the left of the camera and about 45 degrees to the model. If you don't have a soft box this large, 2 smaller soft boxes, one above the other, could be used, if it's important to evenly light them head to toe. You will want it 3-5' back from them, but experimenting with this distance and light level will be necessary. The actual light could be a speedlite, monolight strobe, or continuous light source to drive the soft box. Careful feathering of the soft box will achieve a wrap-around of some of the light to the model's left side, but most will light their right side. The feathering will also reduce light hitting the backdrop. If your soft box doesn't provide enough light to the model's left side, a reflector (foam core board) could be held my an assistant to reflect some of the soft box light to the model's left side. Experimenting will be needed for position and distance to get the best result. There are many ways to achieve this look, but this way uses the least equipment.
Charley