What’s in the horn of plenty?
What: Premier Japanese bookstore offers in-store fashion, art, and cultural events, like Zen cooking demos and photo exhibits.
Why: It’s huge in Japan!
When: Mon.-Sat., 10 a.m.-8 p.m.; Sun., 11 a.m.-7 p.m.
Where: 1071 Sixth Ave., b/t 40th & 41st Sts. (212-869-1700).
The Mermaid Inn Opens Uptown
What: Fancy East Village fish shack goes uptown. And they’re taking the lobster sandwich with them.
Why: Wainscotting, harbor maps, raw bar. How are your sea legs?
When: There’s something fishy going on. Mon.-Thurs., 5-11 p.m.; Fri. & Sat., 5-11:30 p.m.; Sun., 5-10 p.m.
Where: 568 Amsterdam Ave., b/t 87th & 88th Sts. (212-799-7400).
Form SS08 Sale & Tibi Sample Sale
What: A futuristic, romantic, conceptual collection from Form. Take 80 percent off samples and 56 percent off overstock from pattern-heavy Tibi.
Why: Great winds for a sale.
When: Form, Thurs. & Fri., 4-8 p.m.; Tibi, Thurs., 10 a.m.-7 p.m.; Fri., 10 a.m.-6 p.m.
Where: Form Studio, 510 Broome St., b/t W. Broadway & Thompson St., ste. 7e (646-216-9194); Tibi, Loft 11, 336 W. 37th St., b/t Eighth & Ninth Aves. (212-966-3773).
Steven Alan Sample Sale
What: Cotton shirts, cashmere sweaters, silk dresses, poplin pants, denim, and more for men and women are up to 80 percent off.
Why: It’s back!
When: Thurs. & Fri., 8:30 a.m.-8 p.m.; Sat., noon-7 p.m.; Sun., noon-5 p.m.
Where: SAS Showroom, 87 Franklin St., b/t Church St. & Broadway (212-219-3305).
What: More than 100 emerging designers showcase their wares at this new 10,000-square-foot space.
Why: Hit the Underground running.
When: Tues.-Fri., 11 a.m.-7 p.m.
Where: 1031 Sixth Ave., at 39th St. (212-239-7275).
Physique 57 Downtown Opens
What: Cult 57-minute isometric fitness regime opens up a downtown sweatbox.
Why: Feel isolated from exercise? Isolate the muscles.
When: Opens tomorrow. Daily, 7 a.m.-8 p.m.
Where: 161 Sixth Ave., b/t Spring & Vandam Sts. (212-463-0570).