Laura Alber
Analyst · Guggenheim Securities
Thank you. Good afternoon, everyone. On the call with me are Julie Whalen, our Chief Financial Officer; Felix Carbullido, our Chief Marketing Officer; and Yasir Anwar, our Chief Technology Officer.
We had a strong start to 2019 with comp revenue growth of 3.5%, operating margin expansion of 70 basis points and EPS growth of 21%. Customer acquisition and engagement continue to grow as we delivered more compelling and differentiated experiences to our customers. We also reached a significant milestone for our company as we were named, for the first time, to the Fortune 500 largest companies in the United States. This accomplishment speaks to the hard work and dedication of all of our associates, the ongoing support of our loyal customers and the power of our highly differentiated platform in driving long-term profitable growth.
Given our strong start to the year and the strength we are seeing early in the second quarter, we are raising our full year EPS guidance by $0.05. This raise reflects the momentum across our business and our confidence in the substantial growth engines we are executing against. Our financial performance this quarter demonstrates the exciting progress we have made across the business to accelerate growth and improve profitability.
Our cross-brand initiatives continue to build as an important source of revenue growth and customer acquisition. Our cross-brand customer spend on average 4x more than single-brand customers, but they currently account for only 30% of our total customer base. This gives us runway to drive incremental revenues as we continue to unlock the power of our unique, multi-brand, multi-channel platform.
The Key Rewards is one of our most valuable and fastest-growing assets. Since the launch of this loyalty program 2 years ago, total membership has grown to 5.5 million. Key members currently spend on average 3x more than nonmembers with 2x higher purchase frequency and 3x more likely to shop across multiple brands. They also drive a significant lift in sales as Key members typically spend over 5x the value of their rewards. We will introduce new cross-brand marketing initiatives, broad-reaching gamification, easier reward redemptions and enhanced mobile and desktop capabilities to accelerate customer enrollment and realize the full potential of this program. We will also leverage The Key to raise brand awareness and drive more personalized content to our customers.
Our Design Crew Room Planner also continues to gain traction. Total rooms created increased more than 40% over the first quarter to 60,000 as we doubled our product coverage across the Pottery Barn, West Elm and Williams-Sonoma Home brands and enhanced the user experience with more accurate and intuitive design features. Upcoming in Q2 and Q3, we'll be launching the Room Planner in our Pottery Barn children's businesses. We believe 3D visualization will completely redefine how our customers shop for the home and we're excited to be at the forefront of this industry shift with these 3D-powered tools that are transforming the shopping experience for our customers.
I would now like to talk about our newest division, Williams-Sonoma, Inc. Business to Business. We are thrilled with the progress that our team has already made, including our new partnership with the Golden State Warriors. As we jointly announced earlier today with the Warriors, we've been named the Official Furniture and Home Design Partner of the Golden State Warriors, 6-time and hopefully 7-time back-to-back NBA Champion. This is a marquee opportunity and an unparalleled launching pad for our Business to Business division in the United States as well as internationally.
We're even more encouraged that this is just one example of the strategic relationships we are currently pursuing across industry verticals as we expand our B2B business. Company-wide, we've been putting in place the organizational infrastructure to support this growth in Business to Business. We've built a cross-brand, cross-functional support team and are now establishing standardized processes to facilitate large-scale contract projects. We are also restructuring our customer support to a regionally focused project management model that's tailored to the B2B client.
To raise industry awareness for this nascent business, we're in the process of launching our WSI Business to Business brand, starting with the recent Hospitality Design Expo, which debuted our newest cross-brand, contract-grade product, including West Elm's Chroma restaurant table collection. In addition to trade show participation, we're implementing a multifaceted marketing plan that includes collaboration with top-tier industry publications and sponsorship of contract product design competitions.
Another key highlight of the quarter was the ongoing improvements in customer experience. For example, we've completed the launch of our machine learning search engine across all brands. Powered by algorithms, this new engine allows us to provide customers with more relevant and personalized search results, which will progressively improve with more data over time. So far, this new capability has already driven notable lift in search conversions. To deliver a faster and more compelling mobile experience, we improved our mobile site speed within search, [ hits ] and home page through enhancements to our new progressive web app platform. We've also expanded our integration of customer-generated content from Instagram to our mobile product information pages to drive more inspiration and product discovery.
Another milestone was the launch of our in-house technology, test lab. This is a game-changer for our innovation agenda as it will enable us to experiment with new ideas and emerging technologies at scale and quickly determine our go-forward strategy. Technology innovation is a key accelerator of our growth, and we believe that this is a foundational capability that will significantly transform our digital experience.
In the supply chain, order visibility and operational improvements remain 2 of our top priorities. This quarter, we successfully completed the migration of our order management and fulfillment capabilities to a new platform for all brands. This will enable faster and more efficient order processing and tracking as we continue to improve the customer experience. We've also fully redesigned our order tracking capability to give customers and our internal teams a more accurate and granular view of their orders. This capability allows us to offer order visibility of up to 13 milestones compared to the industry standard of 5 through the order placement, fulfillment shipment and delivery journey. While still early days in this, we are already seeing this increased visibility resulting in a 30% reduction in order tracking-related calls at our customer care center.
Another area of operational improvement was the productivity rates in our nonfurniture operations, which increased 10% as a result of improved processes, leading to labor savings and lower returns/replacement rates. In our furniture operations, we are proud to see the accuracy of our delivery date estimates further improve and our in-home delivery service rating reached 4.86 out of 5, the highest we've seen since the inception of the measurement program 2 years ago.
All these improvements in supply chain have enhanced customer satisfaction and delivered cost savings that contributed to our higher operating margin this quarter. As we said at the beginning of the year, we've identified significant cost savings across our business to help offset the financial impact of potential tariffs. But of course, we are not done. We have more initiatives planned to further elevate our customer experience. One of the key upcoming opportunities is the opening of our West Elm West Coast DC in the second quarter. This new DC will help us further improve our delivery times and reduce our operating costs in the western region.
The benefits of all these cross-brand technology and operational initiatives powered our brand performance this quarter. West Elm, our fastest-growing brand, continues to deliver on our aggressive road map of $3 billion with comp growth accelerating to 11.8%. This growth was driven by strong e-commerce and broad-based strength across product categories, particularly in made-to-order upholstery and key customer acquisition categories of textile and decorative accessory. Also our new West Elm stores are outperforming our expectations.
We also saw growth from Pottery Barn where furniture continues to outperform and our outdoor business showed early momentum when we are heading into summer and now is continuing to grow as we are underway into the summer season. Pottery Barn Kids and Teen delivered another quarter of growth with particular strength in the baby business, an important entry point to the brand.
Our emerging brands, Rejuvenation and Mark and Graham, continue to expand their product offer and the new stores in Rejuvenation are also performing above our expectations. Our global business is strong as our team works towards a successful launch of our brand in India next year.
Regarding the Williams-Sonoma brand, although we knew we are up against a tough comp of 5.6% last year, we expected our performance to be better than what we delivered. Easter came late in the quarter and did not perform to our expectations. This negatively impacted both the top line and margin performance of the brand. We also continued to reduce our promotional activity, particularly in Williams-Sonoma Home. As we look forward to the rest of the year, Williams-Sonoma will continue to undergo a transformation to balance the brand's top line with improved profitability. We are focused on increasing exclusive product offerings and more effective content as well as reducing promotions and less productive inventory to drive incremental revenue growth and improve margins.
Before I conclude, I want to provide you also with an update on our sustainability commitments, which are becoming increasingly important to our customers and are key pillars of our growth. In Q1, we are proud to achieve a milestone of 100% GREENGUARD Gold certification for nursery furniture and seating in Pottery Barn Kids, while Rejuvenation announced a landfill diversion partnership with Habitat for Humanity as well as its commitment to offering only textiles that are sustainably sourced and made from organic fibers. It's important to us that we are making a difference in the world through the products that we put in people's homes. This is a key reason why customers choose us over our competitors. I encourage you to take a deeper look at the progress we are making in areas such as worker well-being and our supply chain, GREENGUARD's certification of our furniture and sustainable sourcing of cottons and FSC-certified wood in our upcoming annual CSR report.
As we look to the balance of the year, we believe we are uniquely positioned to capture the significant opportunities we see in the home furnishings industry. We'll continue to build on our strong momentum to achieve our goal of maximizing growth and drive profitability across our portfolio of brands.
Before I pass it over to Julie, I'd also like to thank all of our associates for the strong start to the year. And with that, I will turn the call over to Julie for a financial review of the first quarter and an update to our fiscal year 2019 guidance.