The coolest celebs on the block rocked in Friday night at the Kohl's Rock & Republic Fashion Show. Saldana, Sims, Simpson, Meva Suvari, and Gossip Girl's Chase Crawford and Penn Badgley jammed along to the beats as the denim collection hit the runway.

Winslet, who stars in the brand's Spring 2012 campaign, was on hand for the Fall 2012 show at the Ukrainian Institute Of America. Estefan brought along her husband Emilio to take in the sophisticated collection.

Simon Doonan hosted the showcase, which was also attended by Mary-Kate Olsen, Sandra Lee, Kristen Chenoweth, Kelly Rutherford, Angela Simmons, and Jonathan Adler.

Kors' famous fans never disappoint. Alba and Couric joined Anjelica Huston, Paula Patton, Stacy Keibler, Debra Messing and more to check out the designer's Fall 2012 collection.

The actress and model took in the designers' smoking looks for Falll 2012 before Adriana, the face of Karan's Spring 2012 campaign, headed backstage to congratulate her.

Damon hung out in the Mercedes-Benz Star Lounge before hitting Khan's front row with wife Luciana Barroso.

The Olsen twins made their way to Gilles Mendel's Fall 2012 show Wednesday afternoon. They snuck up the back steps to avoid photographers and took their seats just as the show was about to start.

Posen's dresses seem to be made for Von Teese; his silhouettes expertly accentuate her enviable curves.

Wang's show drew quite the crowd. Oscar nominee Viola Davis sat front row, which left many to speculate as to whether Wang will be designing her gown. Leighton Meester, who is the face of the brand's Lovestruck fragrance, took in the collection as did Maria Sharapova and Renee Zellweger.

Few women wear Herrera's designs as well as Zellweger, who has almost exclusively chosen the designers confections for every important red carpet engagement.