Debut those high-waist hot shorts. Girls, you, too.

PARTY
On a Rooftop
What: Studio B’s new bar with a retractable glass roof and full sound system.
Why: Brazilian Girls, Chester French, 88-Keys, The Rub, and Roxy Cottontail kick off al fresco shenanigans.
When: Fri., 9 p.m.-4 a.m.
Where: Studio B, 259 Banker St., b/t Calyer & Meserole Sts., Grnpt (718-389-1880).

BUY
Madeline Weinrib Sample Sale
What: The designer (and great-granddaughter of ABC founders) takes 50 percent off wool pile rugs, tasseled beach towels, vintage textile pillows, carpet bags, caftans, and more.
Why: Pull that worn rug out from under you.
When: Thru May 11. Mon.-Fri., 10 a.m.-8 p.m.; Sat., 10 a.m.-7 p.m.; Sun., 11 a.m.-6:30 p.m.
Where: ABC Carpet & Home, 881 Broadway, at 19th St. (212-473-3000 ext. 780).

Knoll Space Annual Sale
What: Pick from made-to-order classics in whatever color and fabrics you fancy. Take 10 percent off, plus free delivery.
Why: You’re the first to Knoll about it.
When: May 2-3 & 5-9. Fri. (May 2), noon-6 p.m.; Sat., 11 a.m.-4 p.m.; Mon., noon-7 p.m.; Tues.-Fri. (May 9), 10 a.m.-5 p.m.
Where: 76 Ninth Ave., b/t 15th & 16th Sts. (212-343-4000).

Made in HK
What: Guerrilla pop-up with merchandise from Hong Kong’s indie designers (accessories, fashion, paper goods, cultural ephemera).
Why: Cheaper than the airfare, and no jet lag.
When: Fri.-May 31. Opening party, Thurs., 6-8 p.m. Daily, 12:30-7 p.m.
Where: 181 Lafayette St., b/t Broome & Grand Sts.

FIX
Free Highlights
What: In an effort to socialize with its newish neighbors, Dex New York salon offers free partial highlights in two colors and a consultation.
Why: That shade is to dye for.
When: Book thru June 30.
Where: 224 W. 30th St., b/t Seventh & Eighth Aves. (212-643-3188).

SEE (and HEAR)
A Gathering of Writers
What: PEN American Center’s festival of lectures and happenings with Adam Gopnik, Catherine Millet, Jeffrey Eugenides, Umberto Eco, and more.
Why: A Saturday night dandy-fueled cabaret.
When: Thru Sun. Various times.
Where: Times and locations vary. Check schedule.