Paramount Lighting, sometimes called Butterfly Lighting for the shape of the shadow it forms under the nose, is a female glamour lighting style. It works best for women with strong cheek bones and good skin. This lighting is not typically used with male subjects.
The key light is placed high with the fill light directly under it. Keeping the light close to the subject, watch for the butterfly shaped shadow to form under the nose. Be careful not to place their eyes in shadow.
The fill light is placed at roughly head height and can be accompanied or replaced by a reflector under the face to lighten the shadows under the chin and lower cheek.