A nude woman posing as if she were a statue holds a shining mirror up over her head, the symbol of Truth (indeed she resembles the well-clothed Statue of Liberty.

 The model's left hand holding a rope nicely balances her raised right foot, the light shining on her torso balances the shining mirror. While the model with her mirror represents a Platonic ideal, she does so very sensuously, her curvaceous torso highlighted by a very strong studio light coming into the frame from the upper left. 

The model was in fact a well-known actress of the time, Sophie Croizette.