There is a great selection, even for the sizes that are usually difficult to find. See the range and prices online prior to your shopping spree; it will help save precious time in New York City.
1. La Perla
803 Madison Avenue, New York, NY 10065http://www.laperla.com
2. Saks Fifth Avenue
611 5th Avenue New York NY 10022http://www.saksfifthavenue.com
3. Victoria's Secret Herald Sq
1328 Broadway New York NY 10001http://www.victoriassecret.com