10 Columbus Circle at 60th St (212-956-9760). Subway: A, C, B, D, 1 to 59th St–Columbus Circle. Mon–Sat 10am–9pm, Sun 11am–7pm. Celebrate summer with up to 60 percent off warm-weather threads, preppy accessories and chic decorative items. Highlights include colorful flat sandals, reduced from $98 to $70; roomy nylon totes priced at $55 (were $78); and feminine peplum tops, pared from $58 to $40.