82% matchRAGEBLUE
Tokyo mall-priced casual basics with workwear tilt
What changes: Adastria brand skews more military/streetwear, no designer collabs
GU is Fast Retailing's low-price, trend-led label, launched in 2006 as a sister brand to Uniqlo and headquartered in Tokyo. It runs roughly 480 stores, mostly across Japan and Asia, and opened its first shop outside Asia in SoHo, New York, in September 2024 alongside a US e-commerce site and app. Staples include barrel-leg pants, denim and knitwear under $100. Recent projects include the UNDERCOVER-designed "UG" line from 2025, an Engineered Garments capsule in December 2025, and the January 2026 appointment of Francesco Risso as creative director.
Overall fit
slightly small
GU uses Japanese sizing that tends to run smaller than US/EU equivalents, so many Western shoppers size up, though trend pieces are intentionally roomy.
Tip: Consider sizing up one from your usual US size, as GU uses Japanese/Asian sizing that runs smaller.
Medium confidence · based on 6 sources
By category
| Category | Runs | Shape | Size advice |
|---|---|---|---|
| Trousers & pants | mixed | relaxed to wide barrel-leg | Trendy barrel and wide-leg styles are roomy by design; check the specific cut before sizing up. |
| Jeans & denim | slightly small | regular to relaxed | Denim tends to run slightly small in Western terms; size up if between sizes. |
| T-shirts & graphic tees | slightly small | regular to boxy depending on style | Size up from your usual US size for a standard fit. |
| Hoodies & sweatshirts | true to size | relaxed, often oversized by design | Many styles are cut relaxed, so order your usual size unless you want extra room. |
| Shirts & overshirts | slightly small | regular to relaxed | Consider sizing up, especially for Western frames and layering. |
Directional fit consensus summarized from public sources with AI — a starting point, not a guarantee. Confirm with the product's own measurements before buying.
82% matchTokyo mall-priced casual basics with workwear tilt
What changes: Adastria brand skews more military/streetwear, no designer collabs
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62% matchJapanese-referencing casual staples, designed not mass
What changes: Independent, much higher price and smaller range
Gu fits slightly small. Consider sizing up one from your usual US size, as GU uses Japanese/Asian sizing that runs smaller. GU uses Japanese sizing that tends to run smaller than US/EU equivalents, so many Western shoppers size up, though trend pieces are intentionally roomy.
GU uses Japanese sizing that tends to run smaller than US/EU equivalents, so many Western shoppers size up, though trend pieces are intentionally roomy. Overall shape: trend-led, often relaxed or oversized silhouettes.
Gu trousers & pants varies by piece. Trendy barrel and wide-leg styles are roomy by design; check the specific cut before sizing up. Shape: relaxed to wide barrel-leg.
Gu jeans & denim fits slightly small. Denim tends to run slightly small in Western terms; size up if between sizes. Shape: regular to relaxed.
Gu t-shirts & graphic tees fits slightly small. Size up from your usual US size for a standard fit. Shape: regular to boxy depending on style.