In La Grande duchesse de Gerolstein, Jules Chéret employs a vibrant color palette dominated by reds, yellows, and blues. The composition features a lively scene with a central figure dressed in a lavish gown, embodying the opulence of the operetta. Surrounding her are smaller figures, likely representing courtiers or musicians, all engaged in a festive atmosphere.

The background is filled with decorative elements that enhance the celebratory mood. This artwork is a lithograph, a popular medium for posters in the late 19th century. Chéret's technique showcases bold lines and flat colors, characteristic of the Art Nouveau style. The poster's dimensions are approximately 60 x 90 cm, making it a striking visual piece.

The use of typography is also notable, with elegant lettering that complements the overall design. Jules Chéret was a prominent French artist known for his contributions to the poster movement in the late 19th century. He is often referred to as the 'father of the modern poster' due to his innovative designs and techniques. This particular work promotes Jacques Offenbach's operetta, which was popular in Paris during that time.

Chéret's posters played a significant role in shaping public taste and advertising culture in France.