Good afternoon, everyone. I'm James Reinhart, CEO and Co-Founder of ThredUp. Thank you for joining our first quarter 2025 earnings call. We are pleased to share ThredUp's financial results for Q1 and to update our expectations for Q2 and fiscal year 2025. I will provide a high-level summary of our improving financial profile, but spend the majority of my time commenting on the macro environment and our approach to navigating this unique time for ThredUp. I will discuss key ongoing innovation in our AI-driven product experience and update you on our evolving RaaS strategy. I will then hand it over to Sean Sobers, our Chief Financial Officer, to talk through our first quarter 2025 financials in more detail and provide our outlook for the second quarter and full year 2025. As always, we'll close out today's call with a question-and-answer session. First to the results. We've continued to make meaningful progress reaccelerating growth in our U.S. marketplace after our exit from Europe. Top line growth accelerated to double digits at 10.5% at the same time that we achieved adjusted EBITDA of 5.3% and generated cash of $2.6 million. Active buyer growth turned positive on a trailing 12-month basis and was up 5.7% year-over-year. But most importantly, new buyers acquired in the quarter were up 95% from Q1 2025 over Q1 2024. This positive acquisition trend has continued early in Q2 with April being the strongest new customer acquisition month in our history. Our approach in 2025 is simple, maintain our gross margin and bottom line efficiency and reinvest incremental dollars we generate back into growing new buyers and sellers in our marketplace. We believe this creates the greatest long-term shareholder value. Turning to the macro. Our financial results in Q1 exceeded our expectations, and we believe this had very little to do with the macro environment. Given the announcements of successive rounds of tariffs and the closure of the de minimis loophole only were made public on April 2 and were to go into effect on May 2 or later, it is hard to observe any directly correlated impact. If our customer base remains resilient, while tariffs drive increases in new apparel prices, these changes could add incremental benefit to our current business trajectory for the following three reasons. First, by far, the most impactful to ThredUp is the closure of the de minimis loophole. This is a policy change we have been advocating for over the course of the past few years. While we expect tariff-induced disruptions to global trade to normalize over time, we do not anticipate a broad rollback of the de minimis loophole closure. Duty-free ultra-fast fashion that has flooded the U.S. market over the past few years undoubtedly put some pressure on our price competitiveness. We believe the closure of the de minimis exemption is likely to cause higher prices for these goods and to reduce production volumes, both of which could be a positive for ThredUp. Second, the increase in the price of apparel that could result from broad-based tariffs in key overseas manufacturing hubs could be a tailwind. If the price of new clothing goes up because of these tariffs, we believe this enhances the comparative value proposition for consumers who shop for used clothing on ThredUp. Third, large ad buyers on Meta and Google, like Shein and Temu have announced a reduction in their advertising spend, and this should reduce the escalation we have seen in advertising costs. In some cases, we might see customer acquisition advertising costs come down. This is what we've seen in April, though we anticipate markets to efficiently reprice over time. Finally, on the macro piece, I would reiterate that our business was accelerating before the trade disruptions were introduced in early April. And while we can't predict the future, we want to underscore our fundamentally improving growth and profit profile, tariffs and de minimis closure aside. Now turning to the product experience. Across the product experience, with our inventory of 4 million-plus items that change every day, we have continued to augment the customer experience with an AI-first mentality. Improving our core search and discovery infrastructure is key to building out the next set of customer-facing product features that make thrifting more joyful. Let me give you a few examples of enhancements we've launched in just the past 60 days. First, customers can now effortlessly pivot from items they love to similar styles, shop from any inspiration source and put together outfits on any conceivable theme. Our expanded discovery tools mean customers rarely "miss their chance to purchase a coveted style. When items are sold or held in someone else's cart, a new powerful visual search is just one touch away for items that are just like that item or even better. Sessions where a customer uses our updated shop similar feature have a 64% higher conversion rate as it helps customers discover even more of what they already love. Next, we're developing fully personalized pathways for product discovery. ThredUp has benefited from having a personalized item sort for many years, but our recently upgraded personalized sort is created by incorporating data from every user interaction into unique information-rich customer profiles that we then match against our deep catalog to find the most relevant styles. Each day, we're serving up many hundreds of thousands of personalized product listing pages powered by our in-house recommendation engine. In addition, updated tooling that launched last month is making discovering brands far, far better. It leverages our massive database of customer interactions to define relationships between the more than 60,000 brands that exist on ThredUp. This technology gives customers easy ways to shop groups of brands that have the same style as the ones they already love. Across all the AI-powered discovery initiatives that we've developed over the last year and half, including visual search, Style chat, image search, shop similar and more, we see encouraging signs that we are reshaping browse behaviors. Instead of doubling down on well-established and utilitarian and e-commerce shopping patterns, we're creating new product discovery paths and augmenting existing ones to help make thrifting our vast catalog feel like shopping at your own personal boutique. And finally, beyond optimizing the core product experience, we're launching new ways for customers to shop their favorite styles and trends. In early April, we launched an AI-powered shopping experience for customers to link their social media inspiration from Instagram and elsewhere and receive curated aesthetics, styles and brands to shop on ThredUp. The shop social feature is currently in beta in the ThredUp iOS app, and we're seeing strong early signals, including nearly four times higher conversion than non-AI searches. Now turning to the seller side of our marketplace. We are making substantial investments across the seller experience with our ambition to make ThredUp the default place to sell secondhand clothing online, expanding our TAM and at the same time, our sustainability impact. Our strategy involves expanding the number of ways customers can sell and the frequency with which they want to sell on ThredUp. For premium sellers, we are continuing to refine their dashboards and seller tools to make it easy for those with premium items to feel confident selling on ThredUp. Premium continues to grow as a mix of items processed and contribution margins from premium items sold are 60% higher than regular items sold. Our previous selling experience was designed for episodic cleanout kit selling alongside regular buying patterns. We are now innovating to let buying and selling follow a more rhythmic in-out pattern that we think fits with how the modern consumer thinks about circularity. By a few items, sell a few items, repeat. Last quarter, we launched the ability for customers to sell items alongside any returns they were making on ThredUp, leveraging not just the shipping, but importantly, the psychology of getting rid of things to make room for new things. Already 8% of returns now include items for resale. And on average, customers are including 9 items in those returns. And finally, let me turn to Resale-as-a-Service or RaaS. I wanted to share a more detailed update on our RaaS strategy. Over the past year, we've seen the market evolve in ways we think are counterproductive to building scalable circularity business models. A lot of what's being counted as resale is overstock and customer returns masquerading [ph] a secondhand product. This is largely because brands have been unable to scale their take-back and circularity programs and are left with no choice but to fill their shops with other branded product. In reality, they are paying software, management and consulting fees for programs that are doing very little to build native circularity into their strategies. In short, we think branded resale is being held back by the lack of sophisticated technology and operations. So we've decided to begin open sourcing our front-end technology and back-end logistics chain to encourage brands to make a bigger impact. We believe value for this ecosystem is created in the operations and technology layer to ingest secondhand items at scale and make them available for resale as efficiently as possible. This has never been more relevant than it is today as brands navigate global supply chain disruptions. We're excited to pioneer the next generation of branded resale, pairing free branded resale shops with cleanout programs that significantly reduce barriers to entry for brands and retailers. We expect that these shops will not just help brands expand inventory listings, they will also be more reflective of the brand's aesthetics with catalog data and imagery, enhanced customization, optional cleaning and repair and our built-in ever-improving AI search and discovery technology. Alongside these free resale shops, we are also lowering our usage-based fees on our cleanout programs to support brand loyalty and allow brands to grow their secondhand inventory, ensuring a consistent supply of quality items for sale. We also plan to provide broader marketing support, including new modules on thredup.com to promote branded customer acquisition and retention. We believe branded resale scales better when it's designed with a simplified performance-based model that aligns revenue sharing and usage-based fees with brand success. Over the long term, as branded resale becomes more prevalent in the industry, we believe the ecosystem will benefit from a powerful affordable "universal recommerce layer, akin to what Amazon Web Services has done for cloud services or Shopify has done for small businesses. This can enable any brand to do everything they need across the resale ecosystem. We remain more ambitious than ever as we begin the next chapter of RaaS. With that, I'll turn it over to Sean to talk through the financials in more detail.