Here's a shot of Stacey taken on location using portable Lencarta Safari flash guns. As you can see in the shot below, a large beauty dish was the main light, with a smaller beauty dish shot from behind the pillar provided a hair / rim-light. To make sure the rim light was above the exposure of the main light, I simply had it closer to Stacey.
Canon EOS-1D Mark III, f/5 @ 50 mm, 1/100, ISO 50
Behind the scenes: