One of my recent shoots was themed on 1940's Hollywood glamour style that was made popular by George Hurrell. This involves 3 light sources. The main is at 45 degrees and up high. It is usually a snoot or similar to produce harsh light with no softening. The second light is diagonally opposite for a hair light. The third is to light the background, usually to produce a mottled effect.
The model's makeup is important - it needs to be very pale with ruby red lips. Eye shadow should not be too dark, and eyelash extensions used to be long.