Ke$ha
Pop music's latest muse makes a pants-free splash at Erin Wasson X RVCA in a hot studded and patched vintage motorcycle jacket from What Goes Around Comes Around.
Josh Hartnett & Sam Talbot
The Pearl Harbor hottie and former Top Chef hottie compare eyewear and sip Belvedere cocktails at the L.A.M.B. celebration at Milk Studios.
Zoe Kravitz
Lenny Kravitz and Lisa Bonet's 21-year-old daughter is cool and casual at Gwen Stefani's L.A.M.B. bash at the Surf Lounge at Milk Studios.
Katharine McPhee
Authentic beauty, kind of like the former Idol contestant (just not her hair color), is celebrated at the RealBeauty.com "Get Happy Hour" launch party.
Jessica Szohr
The Gossip Girl cutie giggles as she takes a pair of CHOO 24:7 shoes for a test drive at the Jimmy Choo launch event at Saks Fifth Avenue.
Brooke Shields
A launch party for Jimmy Choo's 24:7 line at Saks Fifth Avenue? Twist this fashionista's arm!
Reggie Bush & Kim Kardashian
Super Bowl winners support their girlfriends for Valentine's Day, too! The Saints player celebrates the E! star's big trip down the runway at the Heart Truth Red Dress Collection fashion show.
Joan Collins
Even Dynasty darlings have to bundle up when leaving the Mercedes-Benz Fashion Week tents at Bryant Park!
Heart Truth Red Dress Collection
Nearly 20 stunning stars—including Kim Kardashian, Estelle and Heidi Klum—remind us that heart disease is the leading cause of death for American women. Could they come up with a more fabulous way to get their message across?
Kristin Chenoweth
The former Pushing Daisies star brings the sass to the Heart Truth Red Dress Collection proceedings at Mercedes-Benz Fashion Week in Bryant Park.
Jordin Sparks
American Idol's season six winner gives Heidi Klum a run for her money as she struts her stuff down the Heart Truth Red Dress Collection runway like a total pro.
William H. Macy & Felicity Huffman
There's no time like the present to celebrate Valentine's Day! The Desparate Housewives star takes a break from her Red Dress runway routine to get a smooch from her hubby.
Bethenny Frankel
The pregnant Real Housewives of New York City star gives the Red Dress Collection runway a baby bump boost!
Gwen Stefani
Metallics and leather are the name of the game at the singer's L.A.M.B. presentation at Milk Studios.
Heidi Klum
Supermama hosts a slew of baby bumps for the launch of her clothing lines for moms-to-be at Destination Maternity!
Lady Gaga
As if you didn't already know, the Grammy winner really has a passion for fashion. If she cloaks herself in white for the AmfAR Gala to kick things off, wonder what she'll wear when she plays Marc Jacobs' afterparty later in the week...
Meryl Streep
Little did you know the Oscar-winner is such a party girl! At the AmfAR Gala, the Julie & Julia star clutches her cocktail and sings a traditional Irish tune as a tribute to the late Natasha Richardson.
Mary J. Blige
The singer weathers the storm to perform for the 7th Annual Women's Day Red Dress Awards at Lincoln Center.
Ashley & Mary Kate Olsen
These are what AmfAR Gala getups look like in a blizzard.
Cyndi Lauper
The '80s pop icon shows her true colors in Alexander McQueen at the AmfAR Gala. Less than 24 hours later, news broke that the iconic designer was found dead in his London home.
See more of Alexander McQueen's Famous Friends!