HeidiSays Denim SaleSan fran What: Stock up on Rock & Republic, True Religion, Antik, and Citizens at 20 percent off. Why: Its no bum deal. When: Thru Jan. Where: HeidiSays, 2426 Fillmore St., b/t Washington & Jackson Sts. (415-749-0655). Hong Kong City Mall Dallas What: Shop hundreds of specialty restaurants, stores, and a gigantic supermarket in Houstons new Chinatown. Why: Far East meets far out. When: Daily, 8 a.m.-11 p.m. Where: 11201 Bellaire Blvd., Bellaire (281-575-7886). Fanny & Delphine Sale Boston What: Upward of 30 percent off labels like Rina Zin, Arrogant Cat, and Hannoh. Why: Wear for art thou. When: Starts Sat. at 11 a.m. Where: Fanny & Delphine, 522 Commonwealth Ave., Kenmore Square (617-266-2006). Calla Zae Sale Boston What: Up to 30 percent off capris, frocks, and delicate skirts. Why: Its a first resort. When: Thurs.-Sat., 10 a.m.-7 p.m.; Sun., noon-5 p.m. Where: Calla Zae, 284 Washington St., Brookline (617-735-0009). Hollywould & Troy Sample Sales NEW YORK What: Sixty to 80 percent off all shoes, bags, and clothing (prices get better as the weekend progresses) at Hollywould; one-off high-design home furniture (sofas, dining chairs, bookshelves, stools) from Troy. Why: A limited run not to mention a full house. When: Hollywould, Fri. & Sat., 11 a.m.-7 p.m.; Sun., 11 a.m.-5 p.m. Troy, Sat., 11 a.m.-6 p.m. Where: Hollywould, 198 Elizabeth St., b/t Prince & Spring Sts. (212-219-1905 ext. 0). Troy, 138 Greene St., b/t Prince & Houston Sts. (212-941-4777). Olive and Bettes Blowout Winter Sale NEW YORK What: Skirts, pants, and blouses from brands like Theory, Splendid, and Tibi are $30 to $50. Why: This is the point of no returns. When: Thurs., 8 a.m.-8 p.m. Where: Olive and Bettes, 384 Bleecker St., at Perry St. (212-206-0036).