Nice rack.

BUY
Decades
What: The L.A.-based consignor plucks gently worn designer vintage and modern clothing and accessories from celebs’ closets. It’s all up for grabs — and at 80 percent off retail.
Why: Coolness from the 1920s to today, including a Pucci multicolored print parka and Marc by Marc Jacobs black sequin dress.
When: Sat., 10 a.m.-7 p.m.; Sun., noon-6 p.m.
Where: Space519, 900 North Michigan Shops, 900 N. Michigan Ave., at Walton St., 5th flr. (312-751-1519). Admission is free.

RESERVE
Exclusive Chicago Fall Shopping Event
What: For just one night, a selection of shopping standbys in the Magnificent Mile and Gold Coast take up to 30 percent off goods. (Yes, you read that correctly.)
Why: The A-plus roster includes J.Crew, Scoop, AllSaints, La Perla, Michael Kors, Exhale Spa, Sofia, and more.
When: Oct. 20. Thurs., 5-9 p.m.
Where: R.S.V.P. here.

SHOP
Dose Market
What: The monthly flea goes full-on fall with Kishr’s spiced coffee cherry tea, marshmallow maker 240Sweet’s Chicago debut, and Halloween treats from Bulls Eye Baking Co., Das Foods, and Salted Caramel.
Why: Buckshot Sonny’s stylized sporting goods and accessories, silk separates from NYC’s Petiole, Laura Lombardi’s Dose-exclusive accessories, and more.
When: Sun., 10 a.m.-4 p.m.
Where: River East Art Center, 435 E. Illinois St., b/t Lake Shore Dr. & McClurg Ct. Tickets online ($8) at dosemarket.com or at the door ($10).

HEAR
Chateau Marmont
What: Bounce between electro, disco, synth, and pop beats at the Parisian quartet’s live gig.
Why: You can danse if you want to.
When: Tonight, 8:30 p.m.
Where: Schubas, 3159 N. Southport Ave., at Belmont Ave. (773-525-2508). Tickets ($14) online at schubas.com.

SIP
Blackbird’s Sake Menu
What: Mixologist Lynn House introduces four premium varieties of the Japanese rice wine, available by the glass, bottle, and as part of chef de cuisine David Posey’s tasting menu.
Why: It’s not just for sushi. Pair Moon on the Water with cantaloupe soup or frozen cucumber mousse.
When: Mon.-Thurs., 11:30 a.m.-2 p.m. & 5:30-10:30 p.m.; Fri., 11:30 a.m.-2 p.m. & 5:30-11:30 p.m.; Sat., 5:30-11:30 p.m.
Where: 619 W. Randolph St., b/t Desplaines & Jefferson Sts. (312-715-0708).

Photo: Courtesy of Decades