Red background with mauve dress with white button up and sandles
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How to style an oversized shirt

Architectural cuts present a new vision of the COS shirt – discover styling cues for the silhouette of the season. 

How to Style an Oversized Shirt
Red background with mauve dress with white button up and sandles
Placeholder for: Red background with mauve dress with white button up and sandles

Architectural cuts present a new vision of the COS shirt – discover styling cues for the silhouette of the season. 

Black trousers with a white button up and black tight shirt on top
Placeholder for: Black trousers with a white button up and black tight shirt on top

WHAT TO WEAR WITH OVERSIZED SHIRTS


The oversized shirt has enduring appeal in the COS collection.  This wardrobe cornerstone has the power to adapt effortlessly to different dress codes by balancing volume and refining the silhouette with subtle styling pieces: 

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    Tailored trousers. Embrace the oversized silhouette with wide-leg trousers or create balanced proportions with cropped and straight-leg styles. 

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    Denim. An oversized shirt paired with jeans is the ultimate off-duty look. Straight or relaxed fits enhance the laid-back feel. 

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    Shorts. Tailored or Bermuda shorts balance the volume of an oversized shirt.  

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    Layering pieces. Styling an oversized shirt over T-shirts, tanks and base layers adds depth. 

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    Accessories and footwear. Cinch shirts at the waist to create definition using a belt. Add jewellery and change flats for heels to transition the look from polished everyday to evening.  

Model in black leather button up and light wash jeans
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DAILY DRESSING


For daily dressing, the oversized shirt is both relaxed and refined. Wear it loose with rolled-up sleeves or with a half tuck to subtly define the waist.  

 

When considering how to style an oversized shirt with jeans, opt for straight-leg denim to create a balanced silhouette. Alternatively, swap denim for relaxed cotton or merino trousers in loose or barrel-leg shapes. Trainers or sandals, minimal jewellery and a classic, everyday leather tote reinforce the understated tone.  

Red background with mauve dress with white button up and sandals with large oversized sunglasses
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SMART DRESS CODES


In more formal contexts, the oversized shirt can be styled with tailoring to add structure. The voluminous shape contrasts with the sharper lines of sculptural dresses, creating a polished silhouette.  

 

Styling it tucked can create a more defined shape, while adding a belt cinches the waist and adds visual interest. Cohesive colour palettes maintain a streamlined feel – essential for modern workwear dressing. 

Red background with white trousers and brown button up shirt
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OCCASION DRESSING


 Sleek silhouettes are key to discovering how to wear oversized shirts beyond the everyday. Sheer, pleated and satin midi skirts, tailored shorts and wide-leg trousers ground occasion looks. Crisp cotton shirts have a workwear-inspired feel, while an oversized silk shirt offers relaxed refinement.  

 

Fabric choice is paramount when styling an oversized shirt for an occasion, with silk, satin, wool and leather adding texture. 

Model in leather trousers and white jumper
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LAYERING AN OVERSIZED SHIRT ACROSS SEASONS 


The oversized shirt has year-round appeal, functioning as a standalone piece and a layering essential. Worn over base layers or beneath outerwear, it transitions easily between seasons, from summer city-break styling to transitional winter-to-spring outfits.  

 

The proportion and length of an oversized shirt can be adapted to suit the season and occasion by layering, tucking or adding a belt. Fabric choices shift from lightweight linen and cotton in summer to wool as temperatures cool. Colour is key, evolving from lighter tones in spring and summer to deeper shades for autumn and winter.  

Person sitting on a stool wearing a blue striped shirt, blue jeans, and black shoes, with a neutral expression and long hair.
Placeholder for: Person sitting on a stool wearing a blue striped shirt, blue jeans, and black shoes, with a neutral expression and long hair.

HOW TO CREATE BALANCE WITH AN OVERSIZED SHIRT 


Maintaining shape is key when considering how to style an oversized shirt. Rolling the sleeves, cinching the waist or half tucking refines the silhouette. 

 

Structured materials like cotton-poplin hold their shape, while softer fabrics such as linen and silk require additional styling to create definition. Accessories and footwear ground the look, ensuring the outfit feels cohesive. These small refinements ensure oversized shirts create subtle impact.  

 

Discover the collection of women’s shirts at COS. 

Folded-cuff cotton shirt

Folded-cuff cotton shirt

800 kr

Cutaway-collar striped cotton-blend shirt

Cutaway-collar striped cotton-blend shirt

900 kr

+1
Fringed checked linen-cotton shirt

Fringed checked linen-cotton shirt

800 kr

Cutaway-collar striped cotton-blend shirt

Cutaway-collar striped cotton-blend shirt

900 kr

+1
High-neck lace top

High-neck lace top

800 kr

Ruffle-collar seersucker blouse

Ruffle-collar seersucker blouse

800 kr

+1
Pintucked cotton blouse

Pintucked cotton blouse

600 kr

+1
Geometric-print shirt

Geometric-print shirt

800 kr