Orange jumpsuits are the new little black dress.

SEE
Location
What: Six top-notch designers (Ben Cho, Libertine, Ruffian) host six nights of art parties in a hyper-designed space (courtesy of downtown don Tony Arcabascio).
Why: Stop by for in-house theatrics and clever, limited-edition tees.
When: Thru June 11. Nightly, 7 p.m. - 9 p.m. (They’re midway through the installation.)
Where: 21 Mercer St., b/t Grand & Canal Sts.

You’re Gonna Miss Me
What: Documentary about Roky Erickson (Crocket of psychedelic rock movement, legendary psychedelic drug user) post insanity plea — and his family’s own perceptual distortions.
Why: You’re gonna miss missing it.
When: Starts Fri. Showtimes at cinemavillage.com.
Where: Cinema Village, 22 E. 12th St., b/t University Pl. & Fifth Ave. (212-924-3363).

Celluloid Skyline: New York and the Movies
What: Multimedia exhibit (including never-been-shown cityscapes) of the Apple on the big screen.
Why: We oughta be in pictures. Oh, wait, we are.
When: Thru June 22.
Where: Vanderbilt Hall, Grand Central Terminal, 42nd St., at Park Ave.

BUY
Exclusive Barneys Nation Ltd. Tees
What: Limited-edition collabo between NYC store and ridiculously soft tops you’ll never take off.
Why: This comfy version is long and wide (you can exhale now).
When: There’s not a lengthy shelf life. Act fast. 
Where: Barneys New York, 660 Madison Ave., at 61st St. (212-826-8900).

Marchesa Sale
What: Up to 75 percent off to-die-for cocktail and evening dresses.
Why: Double, triple, quadruple your pleasure: New duds will be delivered daily.
When: Sun.-Tues., 9 a.m.-6:30 p.m.; Wed., 9 a.m.-4 p.m.
Where: 140 W. 57th St., b/t Sixth & Seventh Aves., 9th flr. (732-539-8750).

Saja Sale
What: Gauzey, lacy, cottony, whispery tops, pants, skirts, frocks at 75 percent off retail.
Why: All fingers point toward chiffon.
When: Thurs., 10 a.m.-6 p.m.; Fri., 10 a.m.-5 p.m.
Where: 250 W. 39th St., b/t Seventh & Eighth Aves., ste. 1601. (212-938-1535).