ThredUP reported strong first-quarter results, with rising consumer interest in secondhand fashion pushing revenue up 10.5% to $71.3 million. CEO James Reinhart says the resale boom could get an extra boost thanks to potential U.S. tariffs on Chinese imports, which may drive up the price of new clothes and make second-hand an even smarter deal. Reinhart also notes that as fast-fashion giants like Shein and Temu pull back on pricey digital ads, ThredUp has seen a decline in advertising/customer acquisition costs. With active buyers up 6% and new customer growth hitting a record 95%, investors responded positively, sending shares up nearly 16% in after-hours trading.