Olive and Bette’s sale

For just one day, the Upper East Side location of this girly boutique is slashing prices up to 75 percent off. Autumn cashmere sweaters are knocked down from $298 to $75, Splendid tees are $13 (were $50), Joie blouses are cut from $234 to $59, and Rebecca Taylor dresses are $90 (normally $360). Also look for jeans and cords from brands including James Jeans and AG Adriano Goldschmied for just $50 (retail $160–$212).