Robert Graysmith’s appearance in Zodiac reflects a working political cartoonist in the late 1960s and 1970s: practical, slightly rumpled, and rooted in functional workwear rather than polished newsroom tailoring. Jake Gyllenhaal plays him with an earnest, boyish energy, dressing in casual layers that feel right at home among drawing desks and research archives.
The central visual anchor of the outfit is his puffy blue jacket worn over an everyday plaid button-down. Because the individual garments are standard period-appropriate wardrobe pieces, pulling this costume together comes down to getting the specific silhouette, layering, and hand-held research props right.
The Outer Layer and Shirt
Graysmith spends much of the film wearing a blue quilted, padded jacket with horizontal baffles and a front zipper. It has the boxy, utilitarian cut of a vintage down jacket or lightweight ski coat from the early seventies. The color is a medium royal or slate blue rather than navy. If you are sourcing a modern equivalent, aim for something with moderate puffiness rather than an ultra-modern, slimline packable jacket, as older outerwear held a stiffer, bulkier shape around the shoulders and torso.
Underneath the jacket, he wears a long-sleeve plaid dress shirt over a plain white crewneck undershirt. The plaid pattern leans toward muted earth tones, blues, or tans with a modest collar typical of late-sixties shirting. Keep the top one or two buttons undone so the white undershirt remains visible at the collar, which establishes the unpretentious, layered work style Graysmith maintains throughout his early days at the San Francisco Chronicle.
Trousers and Footwear
For trousers, Graysmith wears straight-leg grey slacks. Mid-century office slacks were worn higher on the waist than modern trousers, usually with a straight cut through the leg that breaks cleanly over the shoes. Charcoal or heather grey wool blends work best, though standard cotton-twill trousers in medium grey provide an identical outline without feeling heavy. Pair them with a simple dark leather belt with a standard metal buckle.
His shoes are standard brown leather oxfords or bluchers with a rounded toe and a modest heel. They are practical and well-worn, matching someone who walks between desks and libraries rather than an executive wearing high-shine dress shoes. Any standard brown dress shoe or derby with matte or lightly polished leather works seamlessly here.
Hair and Grooming
Gyllenhaal’s hair in the film is styled into a soft, parted mop typical of the era, sitting just below the ears with gentle feathering and full volume on top. If you already have medium-length hair, blow-drying it with a round brush and parting it slightly off-center gets the shape quickly. If you are using a wig, pick a short brown synthetic wig with longer sideburns and trim the bangs so they fall naturally across the forehead without looking rigidly styled.
The Investigation Prop
Because the clothing consists entirely of vintage-style menswear, the prop is what immediately ties the outfit to the Zodiac case. Graysmith’s defining companion during the cipher sequences is a thick copy of David Kahn’s The Codebreakers, the definitive history of secret writing published in 1967. Carrying the actual book, or wrapping a similar-sized hardcover in a reproduced dust jacket, gives you an immediate conversation piece that roots the costume in the character’s cryptanalysis obsession.
Tucking a few yellow legal pads, ballpoint pens, or manila file folders under one arm alongside the book reinforces the exhausted researcher visual from his marathon sessions trying to break the 408-symbol cipher.
