While recession-sensitive designers like Betsey Johnson are bowing out of fashion week, and companies like Obedient Sons & Daughters shuttering completely, a runway show centered around cotton-designed looks resonates as a thrifty solution. At last night's Supima Runway Show at the vaulted Gotham Hall, 21 on-the-up designers showed their pieces in the form of knits, denim and chambray, and superfine shirting. A handful of fashion-savvy judges were on hand, including 30 Rock's Katrina Bowden, and Tim Yap, editor of Sportswear International.