How We Built a Luxury Fashion Store on Shopify Plus

When a premium UK fashion label approached us, their existing Magento store was costing them more in maintenance than it was making in revenue. Page load times exceeded six seconds on mobile, the checkout was clunky, and the visual experience was nowhere near the brand's positioning in the market. They needed a rebuild — and they needed it done without losing a single day of trading.

The Challenge

The brand had built a loyal customer base over twelve years with an average order value exceeding £380. Their customers expected a premium experience from the first click to the unboxing. The old platform simply could not deliver that. Beyond performance, they needed custom size guides, a lookbook feature, and a VIP early-access tier for registered customers — none of which were possible out of the box.

What We Did

• Designed and built a fully custom Shopify Plus theme from a blank canvas — no template shortcuts.
• Implemented a custom metafield-driven lookbook that editors could update without a developer.
• Built a VIP customer tag system using Shopify Scripts to gate early-access collections.
• Created dynamic size guides using product metafields, reducing size-related returns by 18%.
• Optimised every image using next-gen formats and lazy loading, achieving a 91 PageSpeed score on mobile.
• Integrated Klaviyo flows for post-purchase and abandoned browse sequences.

The Migration

We migrated 4,200 products, 22,000 customer records, and the full order history over a single weekend. We used a staging-to-live pipeline with automated redirect mapping, ensuring zero SEO equity was lost in the transition. The cutover happened at 2am on a Sunday — the safest window for a brand with a predominantly UK customer base.

“The new store feels like us. For the first time, our online presence actually matches what we stand for as a brand. The results speak for themselves.”

The Results

• Conversion rate improved from 1.4% to 2.0% — a 42% uplift within 90 days of launch.
• Mobile revenue increased by 67% year-on-year in the first quarter post-launch.
• Average page load time dropped from 6.2 seconds to 1.8 seconds.
• Size-related returns fell by 18% thanks to the dynamic size guide system.
• VIP early-access launch generated £34,000 in revenue within 48 hours.

Key Takeaways

This project reinforced a principle we hold across all premium builds: the experience is the brand. Every interaction — from filtering a collection to reading a product description — shapes how a customer perceives your label. Shopify Plus gave us the infrastructure; our custom build gave the brand its identity back.