On the West Coast, Rachel Bilson stopped by Sunglass Hut clad in a a Vanessa Bruno skirt and blazer, ALC tank, Luv AJ headpiece, and accessorized with Chloe wedges and a Phillip Lim bag, meantime Nicole Richie hosted the festivities at the Beverly Center in a boho-chic violet maxi dress by her own Winter Kate line and a sparkling headband.

Also in the Big Apple, Hayden Panettiere helped disclose Stuart Weitzman’s Young Hollywood Cares Collection for Ovarian Cancer Research. The actress wowed in a plunging Fendi jumpsuit with wrinkle detail and black ankle boots namely she co-designed for the philanthropic boot line.

PHOTOS: Celebs in jumpsuits

Sarah Jessica Parker made the circulars in New York City, autographing shoes at Manolo Blahnik, getting serenaded by Oscar de la Renta at his Madison Avenue cache and ending her nightfall at the Fred Leighton boutique. The style icon sported a dark leather Prabal Gurung dress with a pleated skirt, strap and pearly Manolo Blahnik heels.

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Fashion’s Night Out namely like Halloween because the neatness set; They get clothed up in their hottest duds and work from store-to-store looking for the maximum amusing, star-studded bashes.

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And Thursday night was no exception, with huge multitudes rotating out across the nation apt shop and gathering abreast their favorite A-listers.