Fake it ’til you make it a costume.

PLAY
This Halloween Soundtrack
What: A spooky, scary podcast compiled by queen-of-the-creepy, Fever Ray.
Why: Apparitions of Amadou & Mariam, Neil Young, and Yo La Tengo.
When: You open the door for trick-or-treaters.
Where: From your speakers.

SCORE
Yves Saint Laurent Sample Sale
What: Up to 80 percent off retail prices on ready-to-wear.
Why: In honor of All Saints Day.
When: Thurs., 8 a.m.-8 p.m.; Fri., 8 a.m.-2 p.m.
Where: Metropolitan Pavilion, 125 W. 18th St., 4th flr.

A.P.C. Overstock Sale
What: Women’s, men’s, and accessories up to 80 percent off.
Why: You’re not over it.
When: Fri.-Sun., 11 a.m.-7 p.m.
Where: 33 Grand St., b/t Wythe & Kent Aves., Williamsburg.

SHOP
OH:Pop Opens
What: Two-month pop-up sells unworn, limited-edition vintage bodysuits and lingerie from the ’70s, ’80s, and ’90s.
Why: The Only Hearts archives is paring down to their skivvies.
When: Thru. Jan. 1. Opens Sun., noon-7 p.m.; Mon.-Sat., noon-8 p.m.
Where: 230 Mott St., b/t Prince & Spring Sts.

SPOOK
Mount Vernon Hotel Historic Halloween
What: Back in 1799, the UES spot was actually a rustic retreat from the city (which didn’t extend above 14th Street). For one night, you can tour the decorated carriage house by candlelight.
Why: Ghost stories. And the eerie feeling that you’re not alone.
When: Fri., 7:15-8:15 p.m.
Where: 421 E. 61st St., b/t First & York Aves. (212-838-6878).

Gods and Heroes Halloween Party
What: Dress like one, then attend for live performances (The Very Best), hip-hop on vinyl, dance music from DJ phenoms (17-year-old Kyle Hall, local fave Small Change), and the open bar (all night).
Why: The $35 ticket, sweating, and melted face paint will benefit Charity Water.
When: Halloween, 9 p.m.-3 a.m.
Where: A secret location that doubles as a Brooklyn temple. R.S.V.P. for details.

Photo: Courtesy of Fever Ray