Cleopatra by the French neoclassical painter Jean-Baptiste Regnault (1754-1825).
Regnault painted here a historical subject. But this effort emphasizes only how much he stayed in his time. Cleopatra looks a lot like these women of the Napoleonic era. So was more an excuse to paint a woman in such a lascivious pose. She's more the Vamp of a contemporary salon than a historical person.