Sibylle presents a woman in a contemplative pose, dressed in a flowing gown. The colors are soft and muted, with gentle earth tones dominating the palette. The background is a blend of greens and browns, suggesting a natural setting that complements the figure.

The light falls delicately on her face, enhancing her serene expression. The painting is executed in oil on canvas, a common medium for portraits during the Romantic period. Corot's brushwork is loose and fluid, allowing for a sense of movement and life in the fabric of the gown. The dimensions are approximately 65 x 81 cm, making it a medium-sized portrait.

The composition is balanced, with the figure centrally placed against a harmonious background. Jean-Baptiste-Camille Corot was a key figure in the transition from Neoclassicism to Impressionism. Sibylle reflects his interest in capturing the beauty of the female form and the subtleties of light. An interesting fact about this work is that it showcases Corot's ability to blend realism with a romantic idealism, making it a notable example of his portraiture.

This painting is housed in the Musee d'Orsay, a museum known for its extensive collection of Impressionist and Post-Impressionist masterpieces.