It is only the 2nd day of Mercedes-Benz Fashion Week in NYC, and the tents of Lincoln Center are already busting with the hottest Spring 2011 collections and celebs galore!  RadarOnline.com has a front row seat at the swanky affaire, bringing you all the sizzling photos of your favorite stars who have a passion for fashion.

PHOTOS: Stars At Mercedes-Benz Fashion Week

From Jessica Simpson’s surprise appearance at the Project Runway show as a guest judge, to Ellen Degeneres’ strut down the catwalk at the Richie Rich show, the fashion-conscience crowd has been treated to quality entertainment.

PHOTOS: Jessica Simpson Guest Judges Project Runway Show

Ashlee Simpson-Wentz sat front row at the BCBGMAXAZRIA show on Friday morning, while Diane Kruger stayed close to Karl Lagerfeld’s side at FIT’s Benefit Luncheon.

PHOTOS: Ellen Degeneres Is The Catwalk Queen At Richie Rich

Gossip Girl Jessica Szohr brought her Brooklyn style to the Rag & Bone show, where she sat front row next to model Jessica Stam.

PHOTOS: Chanel’s Totally Chic Soho Store Re-Opening

While we haven’t seen City girl Whitney Port at any shows, the gorgeous reality show star struck a pose in a white peplum mini at the TRESemme Booth in the tents.

What 30 Rock starlet hung out backstage with Project Runway alum Christian Siriano?  What Entourage babe spiced up the front row of Edition Georges Chakra?  Find out by checking out the gallery in Style!