You can achieve this by moving the strobe with the colored light slightly closer to the camera plane allowing more light to spill on the model’s face and body, and, of course, position the model accordingly.
For this shot, all three lights were in play. The backlight caused the dramatic shadows and a highlight effect, while the kicker illuminated the model's right rear, and the strip box lit her face and front side.
Beyond The Key - Building A Subtle Light Setup Lighting isn't easy, a world-class-perfectly-lit studio portrait happens with a lot of instinct and experience. A strong grasp of lighting comes with experimentation and practice.