Diddy, Jennifer Lopez, Mary J. Blige To Hit Fashion's Night Out

Gwen Stefani, Pharrell and the Olsens will be among the celebs swarming New York on Friday night.

A bevy of celebs are slated to light up Fashion's Night Out in New York City on Friday (September 10). For the second consecutive year, stores around the city will stay open for extended hours offering drinks, DJ sets and discounts to promote the retail industry in an elaborate effort coordinated by the style bigwigs at Vogue and the Council of Fashion Designers of America among other organizations.

Retailers are also bringing in big names to hawk their products and dazzle the crowds. Macy's in Herald Square has arranged an all-star lineup that includes an appearance from [artist id="1244169"]Diddy[/artist], who will cruise the city in a Fashion's Night Out party bus and finish things off with an afterparty at the Fifth Avenue Sean John flagship with DJs Prostyle and Envy in tow. Also slated to hit the department giant are designer Kimora Lee Simmons and [artist id="508574"]Jennifer Lopez[/artist], who is promoting her fragrance Love and Glamour.

Fashion-forward celebs [artist id="854"]Mary J. Blige[/artist], Nicole Richie and Victoria Beckham will hold court at the tony Fifth Avenue establishment Bergdorf Goodman. Meanwhile, child-stars-turned-fashion-moguls Mary-Kate and Ashley Olsen will appear at Barneys New York.

Musicians who keep a well-styled foot in the fashion world are also at the helm of several of the night's festivities. Superproducer Pharrell Williams will be on hand for an event at the downtown outpost of his Billionaire Boys Club brand, where a (not-so) surprise show will kick off the event in the early evening. Designer and songstress Gwen Stefani will reportedly show up at a Broadway Sephora location.

Other stars lending their celebrity to the evening's events include "Sin City" star Rosario Dawson, who will host a cocktail party for the Italian luxury brand Bottega Venetta, and tennis champ Serena Williams who will appear at Best Buy.

Supermodel Bar Rafaeli, M.I.A. protégé Rye Rye, "Jersey Shore" star Vinny and fashion pundits Simon Doonan and Robert Verdi are all scheduled to pop up at in-store shindigs around the city.

Style-hungry patrons who can't make it to NYC will be able to experience some of the evening's show-stopping glitz when a Fashion's Night Out specials airs on CBS on September 14.

Who would you want to see at Fashion's Night Out? Let us know in the comments below!