Vertical Solutions · Fashion & Apparel

Fashion & Apparel AI —
Custom Sizing & Outfit Recommendation Agents.

Deploy fashion styling and fit advisors that size customer profiles per item — not a generic size guide — construct visual outfit matches, and process multi-variant bundle carts in one step.

See Use Cases
-28%
Size-related returns
500+
SKUs per size profile
0
Theme code changes
2 wks
To first live agent

Use Cases

Five Agents That Lower Returns and Lift AOV

Deliver sizing fit advice and outfit visual bundles that reduce the #1 cause of apparel returns.

Size & Fit Estimator

Asks a short set of body-measurement and fit-preference questions, then maps the answer directly to your brand's specific size chart per item — not a generic S/M/L guess — accounting for cut, fabric stretch, and category.

  • Body measurement + fit-preference intake
  • Per-item size chart lookup, not generic sizing
  • Fabric stretch and cut factored into the estimate
  • Learns from confirmed purchase and return outcomes

Cross-Brand Fit Normalizer

For multi-brand storefronts, the agent normalizes sizing across brands with different size charts, so a customer who knows their fit in one brand gets an accurate equivalent recommendation in another.

  • Size-chart normalization across multiple brands
  • Handles vanity sizing and regional size differences
  • Confidence-scored recommendation, not a flat guess
  • Flags when a size falls between two chart values

Visual Outfit Orchestrator

Builds complete outfit recommendations from a single item — matching shoes, outerwear, and accessories based on visual style compatibility and current catalog availability, not just 'customers also bought.'

  • Visual style-compatibility matching
  • Full outfit assembly from a single anchor item
  • Real-time stock check across all suggested pieces
  • Occasion and season-aware suggestions

Multi-Variant Bundle Checkout

Lets customers confirm an entire outfit — multiple sizes and colors across several products — into a single draft cart with one conversational confirmation, rather than adding each item manually.

  • Single-command multi-item cart assembly
  • Per-item size and color variant selection handled inline
  • Draft cart handoff for final review before payment
  • Coordinated discount code application across the bundle

Returns-Aware Size Learning

Feeds confirmed returns data (wrong size vs. changed mind) back into the sizing model, so recommendation accuracy for a given SKU improves continuously rather than staying static after launch.

  • Return-reason-aware model feedback loop
  • Per-SKU accuracy tracking over time
  • Flags chronically mis-sized items for catalog review
  • No manual retraining required

In Practice

How one apparel brand cut size-related returns.

A real deployment, walked step by step — from per-item fit modeling to a multi-agent outfit handoff to the merchandiser check before any chart changes.

01
D2C Case Study

An apparel brand was losing margin to size-related returns.

Kovil AI built a per-item fit estimator on top of the brand's existing size charts, replacing a generic S/M/L guide with a model that accounts for fabric stretch, cut, and category before a customer ever checks out.

-28%
Size-related returns
+11%
Average order value
02
Under the Hood

Fit logic reads live size charts and stock through the Shopify Storefront API.

Instead of a static PDF size guide, the agent queries per-item chart data and current variant availability directly, so every recommendation reflects what's actually on the shelf.

500+
SKUs per size profile
Live
Stock-checked variants
03
Multi-Agent Handoff

A Fit Agent hands off to an Outfit Orchestrator, then a Bundle Checkout Agent.

Once a size is confirmed, the Outfit Orchestrator proposes coordinated pieces, and the Bundle Checkout Agent assembles every size and color into one draft cart — no manual re-entry between steps.

3
Agents in the loop
+9%
Outfit attach rate
04
Safety Controls

Size chart changes never ship without a merchandiser's sign-off.

The returns-aware learning loop flags chronically mis-sized SKUs for review, but no chart is updated automatically — a human confirms every adjustment before it goes live.

100%
Chart changes reviewed
Weekly
Accuracy report
05
Outcome

Fewer wrong-size returns, more coordinated purchases, zero theme rewrites.

The fit agent runs alongside the existing storefront, lowering returns while lifting basket size — without a single line of theme code touched.

-28%
Size Returns
+11%
Average Order Value

How It Works

From Fit Intake to Confirmed Bundle

01

Fit Intake

The agent captures body measurements and fit preference (snug, regular, relaxed) through a short conversational flow.

02

Per-Item Chart Lookup

Measurements are matched against the specific item's size chart — accounting for fabric, cut, and category — not a generic scale.

03

Outfit & Bundle Assembly

If requested, the agent builds a full coordinated outfit, checking stock across every suggested piece.

04

Cart Handoff & Feedback Loop

Confirmed selections move to a draft cart; later purchase and return outcomes feed back into sizing accuracy.

Reliability

Built to Not Break Your Storefront

No Theme Modifications

We embed conversational advisor blocks using standard widgets or headless storefront API calls, keeping your theme completely clean.

Per-Brand Size Chart Isolation

Multi-brand catalogs keep separate size chart logic per brand, preventing cross-contamination of fit recommendations.

Confidence-Scored Recommendations

Every size suggestion ships with a confidence indicator, and the agent proactively surfaces the next-best size when confidence is low.

Stock-Aware Suggestions

Vetted models read stock levels across colors and variants, ensuring recommended sizes are always actually available.

Compatibility

Connects to Your Fashion Tech Stack

Shopify Admin APIStorefront APIMetafields APIpgvectorKlaviyoLoop ReturnsNarvarYotpoRecharge

Size Guide vs. Fit Agent

Why Not Just a Static Size Chart?

CapabilityGeneric Size GuideKovil AI Fit Agent
Sizing basisGeneric S/M/L size guide chartPer-item fit modeling with brand-specific charts
Multi-brand catalogsOne-size-fits-all sizing assumptionPer-brand chart normalization
Outfit buildingStatic 'frequently bought together'Visual style-compatibility matching, stock-checked
Learns from returnsNo feedback loopContinuous accuracy improvement from return data
Checkout flowManual add-to-cart per itemSingle-command multi-item bundle checkout

FAQ

Solutions FAQs

Answers regarding styling workflows and catalog sizing.

The sizing recommendations leverage comparative database tables and custom questionnaire metrics to match user dimensions with specific variant measurements per item, ensuring a high-confidence fit rather than a generic S/M/L guess.

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Fashion & Apparel Sizing AI Agents for Shopify | Kovil AI