Sarah Jessica Parker, Justin Bieber, Kim Kardashian

Gustavo Caballero/Getty Images; Rick Diamond/Getty Images; George Napolitano/FilmMagic

Fashion Week Blog Tile

It only makes sense that one of the biggest stars in the world is joining forces with one of the biggest shopping events in the world.

Justin Bieber is set to host Dolce & Gabbana's Fashion's Night Out bash tonight in New York City. In its third year, the fashion and shopping extravaganza that kicks off Fashion Week is getting bigger and better.

The Biebs, who's been hitting the red carpet in a lot of D&G lately, will be cohosting the bash with manager Scooter Braun, L.A. Reid and more famous faces. Proceeds from the night will benefit a cause close to the "Baby" singer's heart: Pencils of Promise, a charity the 17-year-old supports.

Selena Gomez's BF is just one of a slew of A-listers who are planning to hit the FNO party circuit...

Kourtney and Kim Kardashian are holding court at their Big Apple boutique Dash, with special guest DJ Pauly D spinning tunes. Fist pump!

Meanwhile, the reality stars' momager, Kris Jenner, will be schmoozing with It boy Christian Siriano, Heidi Klum and Donald Trump at the highly anticipated QVC party.

Fashionista Sarah Jessica Parker will be signing shoes at—where else?—the Manolo Blahnik store, while starlets Hayden Panettiere and Michelle Trachtenberg are promoting the special shoes they designed for Stuart Weitzman's Hollywood Cares collection.

Real Housewives of New York stars Kelly Bensimon, Luann de Lesseps and Ramona Singer have RSVP'd for New York & Co.'s bash—let the catfighting begin!

Hitting not one but at least two parties is stylist to the stars turned designer, who's popping into Intermix and Bloomingdale's bashes.

Over on the West Coast, Nicole Richie's all set for the Beverly Center bash. "Woot Woot! One more day till @FNOLosAngeles at The Beverly Center. Bring your boyfriend's credit card," she joked on Twitter.

Arnold and Maria's daughter Katherine Schwarzenegger is hosting the Diane Von Furstenberg party on Melrose, while LL Cool J has signed on for the Bloomies bash in Century City, Calif.

Which star's FNO party would you RSVP to? Weigh in below!

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