Lady Lucy Percy stands turned to her left, her gaze meeting the viewer directly, in a three-quarter-length portrait set against a landscape. A wreath of small roses crowns her dark, curled hair, with another single rose pinned at her bosom, adding soft touches of pink to the composition. She wears a tawny-gold dress that catches the light with a subtle sheen, the fabric rendered with broad, fluid brushstrokes that suggest its rich texture.

A jewelled clasp secures a fur pelt draped over her left shoulder, its deep brown contrasting with the luminous gold and the creamy white of her gathered sleeves. A pearl necklace encircles her neck, and double pearl drop earrings frame her face, their surfaces painted with tiny, precise highlights. The composition balances the strong vertical of Lady Lucy’s figure with the curved lines of the fountain and drapery, guiding the viewer’s attention from her face to her hand in the water.

A dense cluster of dark green and brown foliage fills the upper left corner, casting deep shadows over the putto and the urn. The sky in the background is painted with sweeping blue and grey tones, suggesting drifting clouds and a sense of depth. The fountain’s stone basin curves diagonally across the lower left, with water splashing where her fingertips meet the surface.

The right edge of the painting is dominated by the bright, voluminous sleeve, which is highlighted by a strong light source from the left. Subtle, loose brushwork is visible in the rendering of the clouds and distant landscape, contrasting with the more detailed treatment of the figure. The lower right corner is filled by the full skirt of her dress, where warm ochre and gold hues blend together in softly blended folds of fabric.