Last night in New York City, fashionistas from all over celebrated "Fashion's Night Out," an evening billed as the world's biggest fashion party.  And many of our favorite YBF celebs got their party on.  Pics of your favorite celebs at their favorites stores when you go inside... 

Mary J. Blige was the star attraction at the Gucci store.

Mary and The Dream posed for a flick together.

Here's Mary with Amar'e Stoudemire, who seems to be Fashion Week's Man of the Moment.

He's at all the right parties, sits front row, and all the magazines love him. 

Here's The Dream, Mary J Blige, Amar'e Stoudemire and Madeline Nelson taking a nice group pic.

Wynter Gordon made it over to the Gucci party.

The Dream tipped his hat to the camera.

Tameka Raymond made it out to the Gucci store as well.

Here's Melody Thornton smiling for the camera.

Fabolous partied at Gucci.

Chris Brown rocked his personal fashion look at Dolce and Gabbana's Fashion's Night Out.

Kerry Washington partied at the Tory Burch boutique in the Meatpacking District.

Fashion model Chanel Iman struck a pose at Victoria's Secret Bombshells celebration.  

Kelly Rowland, Angela Simmons and Vanessa Simmons pose with Giuseppe Zanotti at his store.
 

Wendy Williams also stopped by the Giuseppe Zanotti store.

Here's David Lauren, Jessica Alba and Andre Leon Talley at the Ralph Lauren party.

Andre Leon Talley and Janelle Monae pose together at Ralph Lauren.

Janelle Monae also performed at the event.

Supermodel Alek Wek attends the Salvatore Ferragamo celebration.

Photos via F.Harrison/G. Napolitano/W.Ragozzino/John Parra/Greg Kessler/J.McCarthy