Look out, Björk.

WIN
Free Tickets to Ólöf Arnalds
What: The silver-voiced Icelandic beauty is in town. Waltz in gratis by correctly answering this question: What’s the English translation of the title of her new album, Innundir Skinni?
Why: A lucky winner gets a pair of tix.
When: Entries due today by 5 p.m. (Winner notified Mon. morning.) Concert, Mon., 8 p.m.
Where: E-mail answers to olofarnaldsconcert@gmail.com. Concert, Schubas, 3159 N. Southport Ave., at Belmont St. (773-525-2508). Tickets ($10) online at schubas.com.

SHOP
Decadestwo.1 Pop-Up Shop
What: Designer gems consigned from Hollywood closets (a Comme des Garçons faux fur capelet, YSL snakeskin pumps, an Hermès trench) for up to 70 percent off.
Why: Twenty DailyCandy readers will be put on a list for the private Tuesday opening reception. E-mail decadestworsvp@gmail.com; first twenty to respond win a spot. (Winners notified Mon.)
When: Opening reception, Tues., 6-10 p.m. Public shopping hours, Wed., 9 a.m.-8 p.m.; Thurs., 9 a.m.-2 p.m.
Where: The Ritz-Carlton Chicago, 160 E. Pearson St., at Michigan Ave. Reservations (required) by e-mailing todd@decadestwo.com. Admission is free.

Maiya Sale
What: Up to 70 percent off Maiya’s dresses in simple silhouettes and brightly colored abstract prints.
Why: David Lerner’s snazzy basics (leggings, tanks, T-shirts) are also up to 50 percent off.
When: Your Sunday brunch wardrobe needs some sprucing up.
Where: Online at swirl.com.

SPOOK
Halloween Shopping at Silver Moon
What: Rifle through Mad Men-style corsets, wigs, vintage burlesque outfits, masks, and period vampire gear on your way to costume-party bliss.
Why: Your delight will be hard to disguise.
When: Thru Oct. 31. Tues.-Fri., 11 a.m.-6 p.m.; Sat., no0n-6 p.m.; Sun., no0n-5 p.m.
Where: 1721 W. North Ave., at Hermitage Ave. (773-235-5797).

EAT
Pierrot Gourmet’s New Dinner Menu
What: The French-inspired bistro pulls a chameleon act, turning into a dimly lit gastropub for dinner.
Why: Lamb shepherd pie, chicken pot pie, and tarte flambe.
When: Mon.-Thurs., 4-8 p.m.; Fri. & Sat., 4-9 p.m.
Where: The Peninsula Chicago, 108 E. Superior St., at Rush St. (312-573-6749).

Photo: Courtesy of Daffodil Publicity