The wrist test for frame size compares one measurement, the circumference of your wrist, with your height. A tape measure and the chart below sort you into a small, medium or large frame in under a minute. Frame size describes the scale of your bones. It is not your body shape and not your weight, and in styling its main job is to set the scale of what you wear.
How to measure your wrist
Use a soft tape measure. Wrap it around the narrowest part of your wrist, on the hand side of the wrist bone, where the skin sits close to the bone. Pull it snug but not tight, and read the number where the tape overlaps.
Then note your height without shoes.
The frame size chart
These are the thresholds for women from the MedlinePlus medical encyclopedia, run by the U.S. National Library of Medicine. Centimeters are converted and rounded.
| Height | Small frame | Medium frame | Large frame |
|---|---|---|---|
| Under 5’2” (157 cm) | Wrist under 5.5” (14.0 cm) | 5.5” to 5.75” (14.0 to 14.6 cm) | Over 5.75” (14.6 cm) |
| 5’2” to 5’5” (157 to 165 cm) | Under 6” (15.2 cm) | 6” to 6.25” (15.2 to 15.9 cm) | Over 6.25” (15.9 cm) |
| Over 5’5” (165 cm) | Under 6.25” (15.9 cm) | 6.25” to 6.5” (15.9 to 16.5 cm) | Over 6.5” (16.5 cm) |
How to read your result
Treat the chart as a rough sort, not a diagnosis. It looks at one bone, three height bands and a medium band only a quarter of an inch wide, so a few millimeters of tape tension can move you across a line. If you land within an eighth of an inch of a boundary, call yourself medium and let the mirror decide the rest.
Height matters because a 6-inch wrist on a woman of 5’0” is a larger bone relative to her body than the same wrist at 5’8”. That is why the chart moves its thresholds up as height increases.
What frame size changes, and what it doesn’t
Frame size does not change your body shape. The Body Shape Calculator reads bust, waist and hips as ratios, and a ratio comes out the same whether your bones are fine or broad. Two women with a waist-to-hip ratio of 0.70 share a defined waist at any frame size. If you have not measured yet, how to measure your body shape takes three numbers.
What frame size does change is scale. A small frame is quickly dominated by chunky chains, wide cuffs, oversized buttons and large-scale prints; the item becomes the first thing anyone sees. A large frame can make fine pieces look lost, the way a thread-thin chain disappears on broad collarbones. Medium frames have the widest range in both directions. Jewelry scale applies this to earrings, necklaces and rings.
Shape tells you where lines should go. Frame size tells you how big the things on those lines can be.
Frame size and Kibbe bone structure
Kibbe’s original 1987 test in Metamorphosis opens with a section on bone structure: shoulders, the length of arms and legs, the size of hands and feet. Wrist size is not one of its questions, but it measures the same idea, and a large or small frame often matches how people answer that section. Kibbe’s 2025 book moved away from scoring body parts altogether. Kibbe body types explains what replaced it.
A large bust on a small frame
Frame size describes bone; bust size describes soft tissue. The two vary independently, so a small frame with a large bust is common, and it creates a specific fitting problem.
A top bought to fit the bust is cut for a larger body everywhere else. The shoulder seams drop past your shoulders, the fabric hangs straight down from the fullest point of the bust, and your torso reads as wide as your bust all the way to the hem. Oversized shapes make this worse, because they take their width from the widest point.
Three fixes work. Buy to fit your shoulders and have the bust let out, or the waist taken in. Choose V-necks and wrap fronts, which break the expanse of fabric across the chest. And pick knits or stretch wovens that follow the body below the bust instead of tenting from it. If you are also under 5’4”, petite body shapes covers the length rules that go with this.