In Portrait of Mrs Robert Celestin Guinness (Dickie), the subject is depicted in a formal setting. She wears an elegant dress, adorned with intricate details that reflect the fashion of her time. The color palette is rich, with deep blues and warm browns dominating the composition.

The background is softly blurred, emphasizing the figure in the foreground. The painting is executed in oil on canvas, showcasing the artist's skill in capturing textures and fabrics. The brushwork is meticulous, allowing for a lifelike representation of Mrs. Guinness.

The dimensions are approximately 76 x 102 cm, making it a substantial portrait. The use of light and shadow adds depth and realism to the work. Philip Alexius de László was a prominent portrait painter known for his ability to capture the essence of his subjects. This portrait of Mrs.

Guinness is a fine example of his realistic style, which was highly sought after in the early 20th century. Interestingly, de László often painted members of the British aristocracy, and this work reflects his popularity among high society. The painting remains an important piece in the collection of the National Portrait Gallery London.