To finish what I started
Sorry, I tend to stray from my train of thoughts frequently. So Manet.
Olympia is based off of the traditional reclining female nude, specifically Titian’s Venus of Urbino (1538).

Venus is a marriage portrait, commissioned by the Duke of Urbino. The woman, herself, is soft and curvaceous, her pose languid and inviting. Her expression invites viewers into her space, sending out a “come hither” to everyone. The flowers in her right hand emphasize her femininity. She is depicted masturbating: a symbol of fertility - people believed that if one masturbated after intercourse, then their chances of conception were increased. At her feet is a small dog curled up, signifying loyalty and fidelity. In the background, two servants are packing linens into a marriage trunk.
In 19th Century France, “Olympia” was a common name for a prostitute - I suppose it would be like doing a painting of a skinny, busty woman wearing skimpy clothing and calling it “Bambi” or something today. Her pose differs from that of the Venus in that she’s reclining but still managing to exude power and control. Her accessories are trendy, fancy, and would have been expensive. Rather than serving as a lead-in to her body, Olympia’s left hand is a stopping point on her thigh. Her servant enforces the perception of her wealth. In place of the dog is an arching black cat.
So through this, Manet is challenging the viewers, who are all wealthy members of the upper-class. They hate her existence (as a representation of successful prostitutes), yet they are the ones supplying her income. Through her pose, Olympia is showing that she is in control of the situation, and her hand reinforces this message.
It’s great, isn’t it? I mean, he could have stuck to a safe or normal topic, but instead he goes on a campaign of social criticism.