Cause who couldn't stand to feel better about pictures of themselves? Simple posing tips for curvy girls - cover arms and bring hands together at waist. Or if arms have no cover point elbows forward, it tilts things in all the right ways.
"Hokusai Meets Fibonacci Golden Ratio" by Ars Brevis This is an example of the golden ratio. The wave creates the curved effect which is pleasing to the eye. It has a rhythm to it, like you are counting up to the curve of the wave.