Alex Katz's piece titled Diana is a striking and minimalist portrait that captures the elegance and poise of its subject. The artwork features a close-up view of Diana's face, rendered with Katz's signature use of flat, unmodulated colors and clean, precise lines. The portrait is set against a soft, mint-green background that contrasts sharply with the dark tones of Diana's hair and the simplicity of her features.

Diana is depicted with a calm and composed expression, her gaze directed slightly to the side. Her dark hair frames her face, cascading down in a smooth, continuous shape that adds a sense of fluidity and grace to the composition. Katz uses minimal detail to capture her features, focusing on the essential elements such as her eyes, nose, and mouth. The subtle shading and line work highlight the contours of her face, adding depth and dimension to the portrait.

The most striking element of the portrait is Diana's lips, painted in a bold red that stands out against the muted tones of her skin and hair. This touch of color adds a focal point to the composition, drawing the viewer's attention and adding a sense of vibrancy and character to the portrait. The minimalist approach allows the viewer to appreciate the refined beauty and elegance of Diana's features without the distraction of unnecessary details.

Diana exemplifies Alex Katz's ability to convey depth and emotion through minimalistic means. The artwork's clean lines, bold color contrasts, and thoughtful composition invite viewers to engage with Diana's serene presence, appreciating the nuanced beauty and sophistication that Katz captures in his portraiture. This piece stands as a testament to Katz's mastery in portraying human expression and character with clarity and elegance.