body 45deg to camera (if you must shoot front on, light the body from the side)
tilt hips and shoulders, +/- head
ensure wearing heels, or if barefoot, stand on tiptoes
one leg takes the body weight (usually the rear hip)
the other leg is the “accent leg” designed to grab the viewers attention, perhaps hide the crotch, and should not mirror the other leg
for plus models, push the front hip back towards the rear hip as this will help expose the curves of her back
legs either apart or in front of each other
shoulders back to:
reduce excess fat showing at axillae, especially if wearing an off-the-shoulder dress
make the chest look fuller as these creates more curves
arms away from body by getting her to do something or have a reason to have them there
consider having the rear arm hidden behind the body
arch back and chest forwards a touch to make the chest more full and create more curve in her back
full inspiration to further make the chest more full and more curves