Scott Caan, Sugar Ray Leonard and Joe Pesci hit the green at 10th Annual James Caan Golf Classic to benefit the Impact Treatment Center; Diane Kruger, Rachel Zoe, Emma Roberts, Zoe Saldana and many more of Hollywood's most stylish attend a dinner hosted by MAC Cosmetics and Vogue celebrating Prabal Gurung at Chateau Marmont; Annette Bening, Jackson Browne, Rita Wilson and others honor Billy Crystal the annual Backstage at the Geffen Gala; Ellen DeGeneres and Samuel L. Jackson join Steve Harvey at his Hollywood Walk of Fame star presentation ceremony—from golf courses to exclusive dinner parties, get the rundown on Monday's top events in this installment of Last Night's Parties.

Jeremy Piven and Michelle Rodriguez talk to the masked Alec Monopoly at his street art show; the cast of "The Big Bang Theory" field questions at the Paleyfest panel; Eva Mendes helps Vogue Eyewear launch a new campaign shot by Mario Testino at a beautiful Simon House estate—get caught up on yesterday's hump day happenings in this installment of Last Night's Parties.

This season, Conde Nast and the CFDA hosted its first-ever "Decoded Fashion" hackathon. Over 78 teams of a total of 550 hackers were challenged to develop the best fashion app that supports the growth of American Fashion as a global industry. The finalists were announced last week, and the five teams will have the chance to show off their ideas at Mercedes Benz Fashion Week tomorrow. Before it all goes down, check out the five apps that are left in the competition. More»

Sunday was no day of rest for the fashion set. Lincoln Center was packed to the gills with everyone from the tall to the small.  Some of the biggest names in fashion showed up for the DVF show, including Hamish Bowles, Linda Fargo and Suzy Menkes, who was "not in the mood" for a photo.  Nikki Hilton also wizzed by, wearing cat-eye sunglasses inside, before we could snap a shot of her "weather-be-damned" bare legs and translucent Louboutins.  Luckily, others were more than happy to pose for the camera to flaunt their street style.

There was a time in the not-so-distant past when people waited for fashion week with bated breath in order to catch a glimpse of the designer creations traipsing down the runways. Today, the sartorial creations of fashion's best and brightest are captured on the streets outside of the tents. These street style stars have become as much a part of the fashion machine as the shows themselves. Although arguments can be made about how there are no longer any true originals in the street style world, there are still some that stay authentic and true to their own aesthetic. We've compiled a list of the best street style women that continue to keep us on our toes.

[Michelle Obama's March 2009 Vogue cover]

Vogue's team of stylists and iconic photographer Annie Leibovitz are at the White House today to shoot the first lady's second Vogue cover, Washingtonian's Carol Joynt reports.

Her cover will probably run in March 2013, exactly 4 years after her first cover with the fashion magazine. She wore a dress by Taiwanese-Canadian fashion designer Jason Wu, the same designer behind both of her Inaugural Ball gowns.

She'll likely be sporting her adorable new bangs this time, and we hope she'll give a nod to a different fashion designer...maybe an American this time? Either way, we can't wait to see her on the cover soon.

[Michelle Obama, Allison Williams, Katy Perry, John Mayer, Dr. Jill Biden]

Katy Perry, who was in town last week for President Obama's Inauguration (she performed at the Kids's Inaugural Ball and the official Inaugural Ball), shared her photo gallery with Vogue.Com. More»

Anne Hathaway, Joseph Gordon-Levitt celebrate with other well-reviewed stars at the Critics' Choice Movie Awards; Jamie Pressly and Renee Olstead do some pre-Golden Globes shopping at the Kari Feinstein Style Lounge; Carmen Electra hosts the Markus + Indrani Icons Book Launch Party at a swanky gallery in West Hollywood; Anna Kendrick, Brittany Snow and Alison Brie share a visual feast at the Alberta Ferretti and Vogue fashion show and dinner at Chateau Marmont—take a look at Thursday's top events in this installment of Last Night's Parties.

Tonight marks the New York Botanical Garden's annual Winter Wonderland Ball, a picturesque party benefiting the NYBG Children's Education Program. The night bring out the best dressed patrons including socialites, designers and fashion editors. Here's a look back at some of our favorite looks from the past.

Fashionistas around the world continue to be inspired by style icons from the past. From the classic style of Audrey Hepburn to the wild and controversial ways of Madonna, we've seen it all in the last few decades. We've come up with a list of six fashion icons and included some simple tips on how you can incorporate their style into your wardrobe this season. More»