5 Best Shopify Plus Agencies for Fashion & Jewelry Brands

A fashion or jewelry store asks a lot of its website. Product pages have to show texture, fit, and finish without a fitting room. Size and metal variants multiply quickly, and most new customers arrive from a social ad on their phone. Shopify Plus gives growing brands room to handle that, but the platform is only half the job. The agency behind the store shapes how it looks and how fast it loads. It also decides how well that store turns visitors into buyers.

What to Look for in a Shopify Plus Agency

Start with Shopify partner status. Shopify lists its partners in a public directory, with tiers based on experience on the platform. You can check any agency’s claim in a few minutes. Next, look for work in your category. An agency that has built stores for apparel labels or fine jewelers already understands lookbooks and variant-heavy catalogs. It will also know how to handle features like appointment booking for bridal or bespoke pieces. Ask how the agency handles speed on image-heavy pages. Fashion and jewelry stores depend on large photography and video, and slow product pages cost sales on mobile. Finally, decide what you need beyond the build. Some agencies focus on design and development. Others also run paid media, creative, and retention, which matters when traffic is the real constraint.

1. Levitate Foundry: Best for AI-Powered Growth Marketing on Shopify Plus

Levitate is an AI-powered growth marketing agency and Shopify Plus Partner. It pairs ecommerce development, including UX/UI and conversion rate optimization, with performance creative and paid media. Its case studies include the jeweler Anita Ko and the fashion label NOCTA. Growth services also cover email, SMS, and organic social, with creative made by an in-house team. That suits fashion and jewelry brands that want one team running both the store and the ads behind it. A brand that only needs a theme rebuild may not use the full service list.

2. Domaine: Best for Luxury Fashion Builds

Domaine is a Shopify Platinum partner based in New York, with support across the US, Canada, and the UK. Its services include store builds, custom apps, checkout upgrades, and ongoing site management. Clothing and fashion is one of its listed industries, alongside beauty and B2B. Its fashion work includes Khaite, where it built retail features such as buy online, pick up in store and in-store appointment booking. For Rothy’s, it moved the brand from a headless setup to a custom Shopify 2.0 theme with regional stores. Domaine’s focus is the storefront and its integrations, so paid media would likely sit with another partner.

3. Swanky: Best for Jewelry Store Migrations

Swanky has worked with Shopify brands since 2012. It became an official Shopify Plus Partner four years later, one of the first three in Europe. The agency has offices in the UK, Australia, and France. Jewelry is a clear specialty, with clients such as Daisy, Medley, and Hogans Family Jewellers. It moved Daisy and Essential Jewellery from Magento to Shopify Plus, and its growth program adds CRO and retained marketing after launch. Fashion clients include Olivia von Halle and bond-eye.

4. Fostr: Best for Heritage and International Brands

Fostr is a Shopify Platinum partner headquartered in Leeds, with support in the UK and US. Its directory listing names clothing and fashion, plus jewelry and accessories, among its industries. Featured clients include the British accessories brand Radley London and Fabergé. Services cover store builds, custom integrations, site audits, and international expansion. That last service suits labels selling across several markets, while brands focused on one country may need less of it.

5. Electric Eye: Best for Conversion Work for US Apparel Brands

Electric Eye is a Shopify Premier partner based in Columbus, serving the US and Canada. It has been a Shopify partner since 2017. Clothing and fashion is one of its main listed industries. For the inclusive fashion brand Happy Curves, it worked on conversion optimization, mobile UX, landing pages, and email automation. It also built the storefront and preorder launch for the footwear brand DAPS. Its client list leans apparel, so jewelry brands should ask for relevant examples first.

Choosing the Right Partner for Your Store

The agencies on this list fall into two groups. Domaine, Swanky, Fostr, and Electric Eye are strongest on the store itself: builds, migrations, integrations, and conversion work. Levitate Foundry adds performance creative and paid media to that build work. Before you sign, ask each agency for one fashion or jewelry project similar to yours. Then ask who will own traffic and creative after launch. Those two answers tell you whether you need a build partner, a growth partner, or one team that handles both.