90% matchReiss
British contemporary tailoring and occasion dressing
What changes: Still store-based with a full menswear side and higher prices
Brand profile
British womenswear label known for tailoring, coats and occasionwear, operating online-only under Debenhams Group, the retailer formerly named Boohoo Group.
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The range started with white cotton shirts in 1981 and still centres on tailoring, coats and occasionwear, with knitwear, denim and leather filling out the rest.
The store chain collapsed in 2019 and Boohoo bought the label for £18.2m, relaunching it online-only; the parent renamed itself Debenhams Group in March 2025.
A premium Editorial range runs roughly £129 to £499, and the brand reaches US shoppers through Macy's, Bloomingdale's and Nordstrom.
Overall fit
runs small
Karen Millen is a womenswear brand known for structured tailoring that tends to run small and fitted, with many shoppers finding the cut narrower than high-street equivalents.
Tip: Consider sizing up, especially in tailored dresses and structured pieces, as the cut is fitted.
Medium confidence · based on 6 sources
By category
| Category | Runs | Shape | Size advice |
|---|---|---|---|
| Shirts & overshirts | runs small | fitted | Size up if you want room across the bust and shoulders in structured shirts. |
| Jeans & denim | slightly small | slim to skinny | Consider your usual size or one up as denim runs snug. |
| Jackets | runs small | tailored, structured | Size up if you plan to layer, as tailored jackets are cut close to the body. |
Directional fit consensus summarized from public sources with AI — a starting point, not a guarantee. Confirm with the product's own measurements before buying.
90% matchBritish contemporary tailoring and occasion dressing
What changes: Still store-based with a full menswear side and higher prices
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Karen Millen runs small. Consider sizing up, especially in tailored dresses and structured pieces, as the cut is fitted. Karen Millen is a womenswear brand known for structured tailoring that tends to run small and fitted, with many shoppers finding the cut narrower than high-street equivalents.
Karen Millen is a womenswear brand known for structured tailoring that tends to run small and fitted, with many shoppers finding the cut narrower than high-street equivalents. Overall shape: tailored, fitted.
Karen Millen shirts & overshirts runs small. Size up if you want room across the bust and shoulders in structured shirts. Shape: fitted.
Karen Millen jeans & denim fits slightly small. Consider your usual size or one up as denim runs snug. Shape: slim to skinny.
Karen Millen jackets runs small. Size up if you plan to layer, as tailored jackets are cut close to the body. Shape: tailored, structured.
Karen Millen is a British womenswear label founded in 1981 by Karen Millen and Kevin Stanford, who began by selling white cotton shirts and opened a first store in Maidstone, Kent, in 1983. Tailoring, coats and occasionwear anchor the range, alongside knitwear, denim and leather. The store chain collapsed in 2019 and Boohoo bought the brand for £18.2m, relaunching it online-only; the parent company renamed itself Debenhams Group in March 2025. A premium Editorial line runs roughly £129 to £499, and the label now sells in the US through Macy's, Bloomingdale's and Nordstrom.