If I remember correctly, it was pretty simple... Feel free to chime in, Don :)
5' Photoflex octabox, camera left at approximately a 45º angle.
Riley was pretty close to the white seamless so there was quite a bit of spill from the octa.
I'm a *little distracted* while writing this, because Sue Bryce is on Creative Live right now. Such a huge inspiration! Amazing photographer and instructor. Check out the 'Before & After' section on her website... Wow!