90% matchRiver Island
Both brands have a contemporary style with a focus on trendy, mid-range fashion. They share a dedication to denim and offer a colorful palette.
Guess
StyleY2KStreetwearMinimalist / Contemporary
Known forJeans & denim
Guess is a Los Angeles denim and lifestyle label founded in 1981 by the Marciano brothers, known for stonewashed jeans and black-and-white advertising. The range spans denim, logo knitwear, dresses, handbags, watches and fragrance, plus Guess Jeans, a streetwear-leaning line directed by Nicolai Marciano, and Marciano and Guess Kids; the group also sells rag & bone apparel. In January 2026 Authentic Brands Group completed a $1.4 billion take-private deal for 51% of Guess intellectual property, with the Marcianos and CEO Carlos Alberini holding 49% and management owning the operating company.
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How Guess fits
| Category | Runs | Shape | Length | Size advice | Confidence |
|---|---|---|---|---|---|
| Hoodies & sweatshirts | true to size | regular to slightly slim, with looser oversized cuts in the Guess Jeans line | regular | Take your usual size; size up only if you want a streetwear-style drape. | low |
| Shirts & overshirts | slightly small | tapered through the waist, European-style slim cut | regular, tuck-friendly | Size up if you have a broader chest or want room to move. | medium |
| Trousers & pants | slightly small | slim, tapered leg | regular to long | Consider one size up if you carry more through the thigh or seat. | low |
| Jeans & denim | true to size | slim and skinny fits dominate, with stretch denim that molds to the body | often long — many report hemming | Order your measured waist and expect a snug, stretchy fit; check inseam as legs run long. | medium |
| Jackets | runs small | short and fitted, especially denim and bomber styles | cropped to regular | Size up if you plan to layer a hoodie or knit underneath. | medium |
| T-shirts & graphic tees | runs small | slim, close to the body through chest and sleeves | regular, sometimes short in the hem | Most people go up one size unless they specifically want a muscle-fit look. | medium |
Does Guess run big or small?
Guess fits slightly small. Size up one if you are between sizes or want anything other than a close, body-skimming fit. Guess menswear is generally cut slim and slightly on the small side, so shoppers who prefer a relaxed drape often report going up a size, while the newer Guess Jeans streetwear line runs looser.
How does Guess fit?
Guess menswear is generally cut slim and slightly on the small side, so shoppers who prefer a relaxed drape often report going up a size, while the newer Guess Jeans streetwear line runs looser. Overall shape: slim, body-conscious cut through the chest and waist.
How do Guess hoodies & sweatshirts fit?
Guess hoodies & sweatshirts fits true to size. Take your usual size; size up only if you want a streetwear-style drape. Shape: regular to slightly slim, with looser oversized cuts in the Guess Jeans line.
How do Guess shirts & overshirts fit?
Guess shirts & overshirts fits slightly small. Size up if you have a broader chest or want room to move. Shape: tapered through the waist, European-style slim cut.
How do Guess trousers & pants fit?
Guess trousers & pants fits slightly small. Consider one size up if you carry more through the thigh or seat. Shape: slim, tapered leg.
Directional fit consensus summarized from public sources with AI — a starting point, not a guarantee. Confirm with the product's own measurements before buying.
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