Classic pin-up imagery draws on 1940s-50s illustration traditions, often chosen to celebrate retro glamour, confidence, and playful femininity. The polka dot dress, victory rolls, and winking expression reference wartime and post-war pin-up art specifically, which some read as reclaiming ownership over a flirtatious female image rather than simply objectifying it. Others just like the nostalgic style without attaching deeper meaning to it.
Where it sits
This is a tall, seated figure with a wide skirt flare at the base, so it suits the thigh, outer calf, or upper arm where the vertical body shape and the fabric spread both have room to sit naturally. It could also work on the ribs or back given the curve of the pose. Shrinking it down much would blur the polka dot pattern and lose the facial shading detail around the eyes and lips.
Making it yours
Ask an artist for any of these.