The painting depicts Caroline Lambart, Countess of Cavan, in a formal pose, dressed in an elegant gown. The color palette features rich, warm tones, with deep reds and golds dominating the scene. Her expression is serene yet confident, suggesting a strong character.

The background is softly blurred, drawing attention to her figure and attire. The artwork is executed in oil on canvas, a medium that allows for rich textures and depth of color. The brushwork is detailed, particularly in the rendering of the fabric and the Countess's facial features. The dimensions of the painting are approximately 76 x 102 cm, making it a substantial portrait.

The use of light and shadow enhances the three-dimensionality of the figure. Philip Alexius de László was known for his portraits of the British aristocracy, and this work exemplifies his skill in capturing personality and presence. Interestingly, Caroline Lambart was a prominent figure in society, known for her beauty and charm, which de László successfully conveys. This portrait reflects the Victorian era's fascination with social status and the importance of portraiture in establishing identity.

It remains a notable example of early 20th-century portraiture.