…Now hear me out:
It dawned on my last week that there is an interesting geometric regularity among images that you glance at and immediately categorize as “pinups.” More often than not, the women can be quickly visually approximated with a handful of mostly acute triangles, like so:
These are presented in the order I drew them over several days—the reference was an old Marilyn Monroe pinup I found on Pinterest. My son thought the one furthest to the left was the best one, because it really properly capture that coolly appraising over-the-shoulder glance (even with no eyes). I feel like I was still making her torso waaaaaay too long (a chronic problem I have sketching full-body gestures). The sketch furthest to the right is the best overall, even if it’s the least like the reference. I included the middle because, despite its flaws, it captured the “geometricness” of the pose that had caught my attention to begin with.