Theory

Theory delivers sharp, city-ready pieces that move between office, travel, and off-duty without losing line. This edit focuses on cleanly cut blazers, controlled midi dresses, and knitwear with just enough ease. Expect thoughtful proportions, fabric-first construction, and silhouettes that work hard as separates.

  • Theory Fitted Black Midi Dress With Spaghetti Straps
    Theory Fitted Black Midi Dress With Spaghetti Straps
    Theory Fitted Black Midi Dress With Spaghetti Straps
    Theory Fitted Black Midi Dress With Spaghetti Straps

    Theory

    Fitted Black Midi Dress With Spaghetti Straps

    $288
    $288

    $442

    -34%

  • Theory Knit Sweatshirt With Zipper
    Theory Knit Sweatshirt With Zipper
    Theory Knit Sweatshirt With Zipper
    Theory Knit Sweatshirt With Zipper

    Theory

    Knit Sweatshirt With Zipper

    $263
    $263

    $387

    -31%

  • Theory Graham Kelso Pants
    Theory Graham Kelso Pants
    Theory Graham Kelso Pants
    Theory Graham Kelso Pants

    Theory

    Graham Kelso Pants

    $198
    $198

    $304

    -34%

  • Theory Grey Wool Jersey
    Theory Grey Wool Jersey
    Theory Grey Wool Jersey
    Theory Grey Wool Jersey

    Theory

    Grey Wool Jersey

    $271
    $271

    $415

    -34%

  • Theory Relaxed Fit Striped Wool-Cashmere Crew Neck Sweater
    Theory Relaxed Fit Striped Wool-Cashmere Crew Neck Sweater
    Theory Relaxed Fit Striped Wool-Cashmere Crew Neck Sweater
    Theory Relaxed Fit Striped Wool-Cashmere Crew Neck Sweater

    Theory

    Relaxed Fit Striped Wool-Cashmere Crew Neck Sweater

    $271
    $271

    $415

    -34%

  • Theory "Boxy" Short Dress
    Theory "Boxy" Short Dress
    Theory "Boxy" Short Dress
    Theory "Boxy" Short Dress

    Theory

    "Boxy" Short Dress

    $346
    $346

    $509

    -31%

  • Theory "Wide-Leg" Jeans
    Theory "Wide-Leg" Jeans

    Theory

    "Wide-Leg" Jeans

    $207
    $207

    $304

    -31%

  • Theory Cap Sleeve Satin Top With Design
    Theory Cap Sleeve Satin Top With Design
    Theory Cap Sleeve Satin Top With Design
    Theory Cap Sleeve Satin Top With Design

    Theory

    Cap Sleeve Satin Top With Design

    $196
    $196

    $288

    -31%

  • Theory Cropped Cashmere Ribbed Sweater
    Theory Cropped Cashmere Ribbed Sweater
    Theory Cropped Cashmere Ribbed Sweater
    Theory Cropped Cashmere Ribbed Sweater

    Theory

    Cropped Cashmere Ribbed Sweater

    $237
    $237

    $348

    -31%

  • Theory Draped Midi Skirt With Side Ruching Detail
    Theory Draped Midi Skirt With Side Ruching Detail
    Theory Draped Midi Skirt With Side Ruching Detail
    Theory Draped Midi Skirt With Side Ruching Detail

    Theory

    Draped Midi Skirt With Side Ruching Detail

    $246
    $246

    $360

    -31%

  • Theory Lace-Up Wrap Back Tie Blouse
    Theory Lace-Up Wrap Back Tie Blouse
    Theory Lace-Up Wrap Back Tie Blouse

    Theory

    Lace-Up Wrap Back Tie Blouse

    $174
    $174

    $293

    -40%

  • Theory Neutrals Tailored Wide-Leg Wool-Blend Pants
    Theory Neutrals Tailored Wide-Leg Wool-Blend Pants
    Theory Neutrals Tailored Wide-Leg Wool-Blend Pants

    Theory

    Neutrals Tailored Wide-Leg Wool-Blend Pants

    $261
    $261

    $437

    -40%

  • Theory Fitted Peplum Hem Triacetate Tank Top
    Theory Fitted Peplum Hem Triacetate Tank Top
    Theory Fitted Peplum Hem Triacetate Tank Top

    Theory

    Fitted Peplum Hem Triacetate Tank Top

    $164
    $164

    $282

    -41%

  • Theory Fluid High-Waisted Triacetate Wide-Leg Pants
    Theory Fluid High-Waisted Triacetate Wide-Leg Pants
    Theory Fluid High-Waisted Triacetate Wide-Leg Pants

    Theory

    Fluid High-Waisted Triacetate Wide-Leg Pants

    $220
    $220

    $360

    -38%

Theory

The Theory collection on TheList highlights the label’s strength in modern tailoring and intelligent basics. Single-breasted blazers like the Clinton jacket, straight-leg and subtle-flare trousers, and midi skirts with smooth waistbands create a clean foundation for work and after-hours. Knitwear runs from lean merino crew necks to relaxed wool-cashmere stripes and turtlenecks you can layer under suiting. Dresses land in the studio-to-dinner space: fitted black midis with fine straps, mini styles with spear lapels, and easy shirt dresses in fluid silk georgette.

Filters help you move quickly between key categories and price bands:

  • Blazers and long coats for light structure
  • Tailored pants, from narrow Treeca cuts to gentle flares
  • Midi and mini dresses for event or office
  • Sweaters and knit sweatshirts with considered details

Pieces sit naturally next to popular brands like Jil Sander, The Row, and Acne Studios for a quiet, office-forward wardrobe. All Theory styles ship from authorized stockists with documented provenance.

FAQ

How does Theory sizing compare to other designers on TheList?
Theory typically runs true to label with a clean, close-to-body cut, especially in tailored pants and blazers. Product pages note if a piece is cut slim, relaxed, or long through the leg. Compare the listed measurements to a similar piece you own for best results. If you sit between sizes, many customers size up in more structured tailoring.
Are Theory blazers and pants sold as full suits or separates?
On TheList, Theory tailoring is sold as separates so you can mix sizes and proportions. Many jackets pair back cleanly to multiple trouser fits, from Treeca to more relaxed flares. Check fabric composition and color descriptions to build a coherent set. This also lets you wear the blazer independently with denim or other labels in your wardrobe.
What occasions does this Theory edit work best for?
This selection leans into work-life dressing and low-key events. Tailored pants, midi skirts, and silk blouses handle office and client meetings, while knit dresses and mini styles with sharper lapels read right for dinners or gallery nights. Layer merino crews under blazers for travel or more casual days. The focus stays on clean lines rather than statement logos.
How should I care for Theory knitwear and silk pieces?
Always follow the care label for each garment, as fabrication varies across wool, wool-cashmere, and silk georgette. Most fine-gauge wool and cashmere-blend sweaters benefit from gentle hand washing or professional dry cleaning, with flat drying to maintain shape. Silk shirts and dresses usually require dry cleaning to preserve drape and color. Store knits folded rather than hung to avoid stretching at the shoulders.
Can I style Theory pieces with other designers on TheList?
Yes, Theory’s clean silhouettes and restrained detailing layer easily with other labels. A Theory blazer or tailored pant works well alongside pieces from popular brands like The Row, Jil Sander, or Acne Studios if you favor a minimal, architecture-driven look. Use Theory’s knitwear and dresses as the grounding layer, then add more conceptual accessories or outerwear if your style leans avant-garde. The neutral palette and controlled cuts make cross-brand styling straightforward.