J.Crew-owned brand Madewell is generating buzz and traffic without resorting to discounting by releasing a new denim product every day for 24 days. Some are collaborations with outsiders such as denim Vans shoes, a Gwyneth Paltrow Goop jumpsuit, and an ABC Carpet and Home chair. Others are new products or re-released classics. While still small, Madewell is growing, up 17% in the first quarter, as its parent J.Crew loses sales.