In Nelly, the viewer is greeted by a striking portrait of a young woman. The color palette is soft, featuring muted tones of blue, gray, and cream. The subject's expression is serene, with delicate features that draw the viewer's attention.

The background is subtle, allowing the figure to stand out prominently. The painting is executed in oil on canvas, showcasing Whistler's skill in capturing light and texture. The brushwork is refined, with smooth transitions between colors that create depth. The dimensions of the artwork are approximately 76 x 63 cm, making it a sizable portrait.

The composition is balanced, emphasizing the subject's poise and grace. James Abbott McNeill Whistler was an influential American artist known for his unique approach to color and composition. Nelly is believed to be a portrait of a friend or model, reflecting Whistler's interest in capturing the essence of his subjects. An interesting fact about this work is that it exemplifies Whistler's shift towards a more personal and intimate style in portraiture during the late 19th century.