Fashion / Formal WearPromGirl's Complex Catalog Migration to Shopify

The Challenge
PromGirl operates one of the largest online formal wear catalogs, with thousands of prom dresses, homecoming dresses, and special occasion wear. Their legacy custom platform was becoming increasingly difficult to maintain and couldn’t keep up with modern eCommerce demands.
The challenge: migrate a massive catalog of 10,000+ SKUs to Shopify without losing the organic search traffic that drives their business.
Our Approach
We developed a phased migration strategy that prioritized data integrity and SEO preservation:
Catalog Migration
- Custom data transformation scripts for product import
- Image optimization and CDN setup
- Variant and inventory mapping
- Category and collection structure redesign
SEO Preservation
- Comprehensive URL audit and redirect mapping
- Meta data migration and optimization
- Structured data implementation
- Internal linking strategy
The Results
The migration was completed in 8 weeks with 99% of URLs properly redirected. PromGirl’s organic traffic remained stable throughout the transition, and the new Shopify platform has enabled faster site updates and easier inventory management.
Key Outcomes
- ✓ Successfully migrated 10,000+ product SKUs
- ✓ Preserved organic search rankings through comprehensive redirect strategy
- ✓ Improved site performance with optimized Shopify theme
- ✓ Streamlined inventory management with Shopify admin
- ✓ Integrated with existing fulfillment systems

