A 2D digital illustration captures a young woman taking a selfie through a thick yellow-framed convex mirror in an underground transit station. She has short dark hair, large eyes, and wears a red jacket over a white shirt with grey headphones resting around her neck. She holds a dark smartphone directly in front of her lower face. The curved reflection reveals subterranean pale teal tiled walls, a descending staircase, and yellow tactile paving. The background outside the mirror's frame extends the grimy station environment with deep perspective lines. The artwork features crisp black line art, flat cel shading, a muted color palette dominated by sickly greens contrasting with the red jacket, and a subtle fisheye distortion emphasizing the security mirror.