Frequently Asked Questions
What is 骨格診断 (bone structure typing)?
Bone structure typing (骨格診断, kokkaku shindan) is a popular Japanese styling framework that sorts people into three body-frame types — Straight (ストレート), Wave (ウェーブ) and Natural (ナチュラル) — based on skeletal structure and how flesh sits on the body, not on weight or size. The goal is to identify the silhouettes, fabrics and necklines that flatter your natural lines.
How does this bone structure test decide my type?
You answer 12 quick forced-choice questions about your frame — shoulders, neck, wrists, where you carry weight, how your body reads in a fitted top. Each answer points toward Straight, Wave or Natural, and the type your answers most resemble becomes your dominant result, with a full breakdown of all three scores.
Is this the official 骨格診断 diagnosis?
No. This is a free self-assessment quiz inspired by the framework, not an official or professional diagnosis. A trained image consultant assesses your frame in person; this test gives you a fast, directional read you can act on immediately. For a definitive result, consult a professional stylist.
What is the difference between Straight, Wave and Natural?
Straight (ストレート) frames carry weight on the front of the body with a defined, three-dimensional torso and suit clean, structured lines. Wave (ウェーブ) frames are softer and lower-centred with a slim upper body, and flatter drape, movement and detail. Natural (ナチュラル) frames read as larger-boned and angular at the joints, and wear relaxed, oversized, textured pieces well.
Is bone structure type the same as Kibbe body type?
No. Kibbe sorts you on a yin–yang scale across thirteen image types, while 骨格診断 uses just three skeletal frame types. They overlap in spirit — both dress you to your natural lines rather than your size — but use different categories, so your Kibbe type and your bone structure type are described in different language.
How long does the bone structure test take?
About 2 minutes. There are 12 quick forced-choice questions about your frame, and you get your dominant type plus the full three-way score breakdown instantly, with no signup required.