Size, fit and style advice that stops shoppers guessing
In fashion, the hardest question is rarely what to buy. It’s which size, and how it will fit. Aria uses your size guides, fit notes and product details to answer the way a good store assistant would, and helps shoppers put a look together.

Hi! I'm looking for a warm wool coat for winter. Something classic that works for the office and at weekends.
A classic wool coat is a great choice. Belted wrap coats feel softer and more relaxed, while cleaner shapes look sharper at the office. Here are three to start with:
The questions that stall a fashion purchase
A size chart answers the measurements, not the question. Unsure shoppers order two sizes and return one, or don’t order at all.
- They leave to compare elsewhere…and often buy from whoever answered first.
- They guess, and send it backA wrong shade, size or model is a return you pay for.
- They ask support…and wait for an answer to a question that was really a sale.
I’m between M and L. Which size should I order?
Aria answers from: Size guide, fit notesWill this coat work over a chunky sweater?
Aria answers from: Cut, fit, layeringIs this fabric warm enough for winter?
Aria answers from: Materials, fabric weightWhat would go well with this?
Aria answers from: Related products, styleFrom a vague question to a confident choice
- 01
Asks how they’ll wear it
Measurements are only part of the answer. Aria asks about fit preferences, layering and the occasion.
I love the first one, but I'm between M and L. I'd mostly wear it over chunky sweaters.
Do sleeves usually feel too long or too short on you?
- 02
Uses your size data
Recommends a size from your size guides, garment measurements and fit notes, and explains why.
Usually a bit short. I have long arms.
That changes my answer. The M sleeve is 62 cm and the L is 64 cm. With long arms and a sweater underneath, the L gives you proper cover at the wrist, and the belt takes in the waist so it won't look oversized.
- 03
Completes the look
Suggests pieces that go with it and answers delivery and return questions before checkout.
Okay, the Harbor in L. Anything that goes with it?
A soft grey knit scarf works well with camel and keeps the look calm enough for the office:
$45Grey Merino ScarfSoft rib knit, pairs with camel
See it with a fashion catalog
A conversation from a fictional fashion store: picking the right size of coat for how the shopper will actually wear it, then finishing the look.
It works out the right size from how the shopper will actually wear the coat, over chunky knits and with long arms, using the size guide and fit notes. Then it adds a matching piece and settles the return question before checkout.
The product data Aria works from
Aria answers from your catalog, never from guesswork. During implementation we audit attributes like these and enrich them together with your team.

- Fit
- Relaxed, dropped shoulders
- Sleeve length
- M 62 cm · L 64 cm
- Material
- 80% wool, 20% polyamide
- Fabric weight
- Heavy, for winter
- Care
- Dry clean only
- Goes with
- Grey Merino Scarf
What you learn from every conversation
The same conversations feed your analytics dashboard.
- The products shoppers ask about sizing most48conversations
- Fit questions your size guide doesn’t answer31conversations
- Styles and colours shoppers ask for that you don’t carry22conversations
Questions about this use case
How Aria works with this kind of catalog.
From your own size guides, garment measurements and fit notes, combined with what the shopper tells it. It doesn’t invent measurements: if a product has no size data, Aria says so.
Yes, from the product relationships and style information in your catalog.
Yes, based on the return and exchange policies you configure.
Yes, as long as size and fit information is available in the catalog for those products.
Built for other catalogs too
Experience Aria for yourself
Leave a few details and step straight into a fictional online store where you can see how Aria understands customer needs, clarifies what matters and guides customers toward relevant products and a confident buying decision.
- Explore different shopping situations
- Interact with Aria in your own words



