Madewell x Karen Walker® Garment-Dyed Sweatshirt, mustard color, size L. Since 1989, New Zealand's Karen Walker has specialized in versatile pieces featuring charmingly offbeat details and inventive backstories. For our exclusive collab, we teamed up on fresh versions of her signature styles—this bell-sleeved sweatshirt is subtly gathered at the shoulders and is garment-dyed for the richest color.