In Tillie; A Model, we see a young woman, Tillie, portrayed with a calm expression. The colors are soft, with a palette dominated by warm browns and muted blues. She is dressed in a simple yet elegant outfit, which highlights her natural beauty.

The background is subtle, allowing the viewer to focus on her face and posture. The painting is executed in oil on canvas, a medium that allows for rich texture and depth. Whistler's brushwork is delicate, creating a lifelike representation of Tillie's features. The dimensions of the artwork are approximately 76 x 63 cm, making it a medium-sized portrait.

The use of light and shadow adds to the realism of the piece. James Abbott McNeill Whistler was an American artist known for his contributions to the Realism movement. Tillie; A Model showcases his ability to capture the essence of his subjects with simplicity and grace. Interestingly, Tillie was a frequent model for Whistler, and this painting reflects their collaborative relationship.

The work is part of the collection at the Museum of Fine Arts Boston.