You should check these out:
Tibi and Hollywould - May 16-18 at 336 West 37th Street between 8th and 9th Avenues on the 15th floor
Delman Shoes - I believe this is also between May 16-18 at the Metropolitan Pavilion (enter on 19th Street)
Victoria Keen - I love this funky designer! Sale is from May 17-31 in her store on Lafayette between Bleecker and Bond Streets.