A vertical, vibrant pop-art-style digital illustration of a young woman in her 20s looking back over her shoulder at the viewer with a playful, confident smile. Her face is turned in three-quarter view, with a soft, flirty smirk, glossy peach-coral lips, and warm, rosy cheeks dusted with freckles across her nose. Her eyes are large and green, framed by long dark lashes and defined brows, with a sidelong, teasing glance. Her hair is long, voluminous, and wavy, in a gradient of deep violet, magenta, and hot pink, with full wispy curtain bangs framing her face. Loose strands and flyaways give the hair movement, with glossy highlights in electric purple and pink running through the waves. She wears a fitted, short-sleeve navy-blue ribbed crop tee with subtle fabric texture and a light sheen. Her shoulder is turned toward the viewer, emphasizing the twist of her upper body. The background is a flat, graphic composition of bold diagonal color blocks in turquoise and coral-pink, with fine halftone dot patterns and subtle grain, evoking retro comic and poster design. Style: modern comic-book and manga-inspired digital illustration with clean ink linework, cel-style shading mixed with soft airbrushed gradients, and a halftone texture overlay. Highly detailed hair strands, glossy skin highlights, and crisp contour lines. Saturated, high-contrast color with a retro pop-art finish. Palette: neon violet, magenta, and hot pink against turquoise and coral, grounded by deep navy and warm peach skin tones. Mood: playful, flirty, confident, energetic, trendy. Technical: 9:16 portrait, close-up from head to upper torso, over-the-shoulder pose, high detail, flat graphic background, bright even lighting with soft rim highlights, poster and wallpaper-quality finish. Negative prompt: photo-realistic, muted colors, dull lighting, blurry face, distorted hands, extra fingers, asymmetrical eyes, messy linework, text, watermark.