Virtual try-on and size recommendations for luxury fashion brands on Shopify

One Shopify app puts a fitting room on every product page: personalised sizing, Complete the Look and virtual try-on. Shoppers find their size, build the whole outfit and see it on themselves before they buy. Founder setup, same day.

Rendered Fits reviews from Shopify merchants

★★★★★ 5/5 ·

“Sienna & Sidney have been very responsive and adaptable to our needs. Its early days but first signs are that browsers are using the technology and it is contributing towards increased sales.”

Really Wild Clothing Company logo Really Wild Clothing Company, United Kingdom · Shopify App Store review

★★★★★ 5/5 ·

“Our partnership has significantly enhanced the customer shopping experience, resulting in increased sales and measurable value for our business. The team has been exceptional to work with—reliable, collaborative, and consistently committed to delivering high-quality service”

University of St Andrews Shop logo University of St Andrews Shop, United Kingdom · Shopify App Store review

Read Rendered Fits reviews · See the reviews on the Shopify App Store

What is Rendered Fits?

Rendered Fits is a Shopify app for fashion brands with three parts: personalised sizing, Complete the Look and virtual try-on. A Try it on button sits on your product images, styled to match your theme, with a Find my size link under your size picker. Shoppers stay on your product page, in your brand.

Personalised sizing: specific to the piece

Their measurements. Their proportions. A recommendation for the garment they are looking at. A reusable shopper profile, your available sizes, and an explanation that makes the recommendation clear.

Complete the Look

Shoppers build a whole look with a size for every piece, then add a single item or the whole outfit to the bag.

Virtual try-on

Womenswear and menswear. One selfie, one tap, and the shopper sees it on themselves with the size to order. Try-on images are an appearance preview, not a guarantee of fit; size advice depends on each product’s size data.

Set-up: live without a developer

  1. Install from the Shopify App Store. Start on Free, or try Complete free for 14 days.
  2. Pick a product and style the button. Setup & design previews the fitting room on one of your products.
  3. Add to theme and save. No theme code edited; uses your product photos; billed through Shopify.

Plans

Prices in USD, billed through Shopify, no sales-based fees, one storefront per plan.

Questions before you install

How to reduce returns caused by wrong sizing in online fashion

Publish a product-specific size chart, explain the cut and give shoppers size advice where they choose a size. Rendered Fits combines a reusable fit profile with your product size chart and fit notes; its Free plan lets you evaluate personalised sizing on one product.

Measure size-related returns after the return window closes. A try-on image previews appearance; it does not establish physical fit or a guaranteed reduction in returns.

Read the returns guide · Check your size chart free

Can shoppers get a size recommendation without uploading a photo?

Yes. Shoppers complete one reusable fit profile and can receive a recommendation for a supported product using its sizing information.

Photo-based virtual try-on is optional and helps with appearance. Prepare accurate charts, units and fit notes before evaluating size recommendations on your collection.

Explore personalised sizing

How can I check whether my Shopify size charts are readable?

Use the free Rendered Fits size-chart audit to check the information on your public storefront. No installation or sign-up is needed.

It checks size-guide links, size coverage, units, labels, fit notes and readable charts. Our published research describes 829 scanned stores; it measures information the scanner could read, rather than proving that a missing chart caused a return.

Audit your store · Read the research and method

Learn more