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Free bone structure body type test (骨格診断), 12 quick questions revealing whether your natural frame is Straight (ストレート), Wave (ウェーブ) or Natural (ナチュラル). A self-assessment styling guide, instant result, no signup.
Bone structure typing (骨格診断 / kokkaku shindan) is a popular Japanese styling framework that sorts people into three body-frame types based on their skeletal structure and how flesh sits on it — not on weight or size. The three types are Straight (ストレート), Wave (ウェーブ) and Natural (ナチュラル).
This is a self-assessment quiz, not a medical or professional diagnosis. It uses 12 quick observations about your frame to estimate your dominant type, then suggests the silhouettes, fabrics and necklines that tend to flatter it.
Whether your dominant frame is Straight, Wave or Natural
How your three frame scores break down
Which silhouettes, fabrics and necklines flatter your natural lines
The fabrics and tailoring to lean into — and which ones fight your frame
How to shop and build a wardrobe around your dominant type
How would you describe your overall body impression?
12 questions, 2 min. Auto-advance — no manual Next.
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Take the Bone Structure TypeFree bone structure body type test (骨格診断), 12 quick questions revealing whether your natural frame is Straight (ストレート), Wave (ウェーブ) or Natural (ナチュラル). A self-assessment styling guide, instant result, no signup.
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