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Vince Vaughn, Kristen Bell, Robert Duvall, Helen Mirren, Malin Akerman, and Jon Favreau were among the celebs who hit up the red carpet for the “Couples Retreat” premiere in Los Angeles last night!

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Larry David and Jerry Seinfeld were on hand for a special screening of HBO’s “Curb Your Enthusiasm” in New York City last night. Patricia Clarkson, Kerry Washington, Hoda Kotb, Steve Buscemi, and others came out to delight in the awkwardness. As Larry might say, “Pretty … pretty … pretty good.”

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Old “Friends” Courteney Cox-Arquette and Lisa Kudrow helped the hungry with Isla Fisher, Sheryl Crow, Christina Applegate, and a ton of other celebs at the “Rock a Little, Feed a Lot” benefit concert at Club Nokia in Los Angeles last night.

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Some of Hollywood’s brightest female talents were on hand for Variety’s first Power of Women luncheon this week in Beverly Hills. Anne Hathaway, Christina Aguilera, AnnaLynne McCord, Olivia Wilde, and other attendees arrived in style.

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It was all about the kids as Mary J. Blige, Anderson Cooper, and a bevy of celebs attended the New Yorkers for Children Fall Gala in the Big Apple.

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Stars hit the red carpet for one of Hollywood’s biggest nights of the year, as Drew Barrymore, Tina Fey, Justin Timberlake, Stephen Colbert, Heidi Klum, and television’s biggest names arrived for the 2009 Emmy Awards.

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Seemingly hundreds of celebs descended on Radio City Music Hall last night for the 2009 MTV Video Music Awards. Beyonce, Taylor Swift, Alicia Keys, Chace Crawford, and dozens more strutted their stuff. Lady Gaga looked . . . well, see for yourself. And “Twilight” stars like Taylor Lautner and Ashley Greene looked supernaturally gorgeous.

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Blake Lively, Jessica Szohr, Emma Stone, and Penn Badgley were among the stars helping to launch designer Anna Sui’s collection of “Gossip Girl”-inspired fashion in New York.

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Mickey Rourke, Lily Allen, Yoko Ono, Kate Moss and Guy Ritchie were just some of the well-dressed stars hitting the red carpet at The Royal Opera House in London for the GQ Men of the Year Awards.

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Stars have descended on the “City of Water” for the 66th Venice Film Festival. George Clooney, Eva Mendes, Nicolas Cage, and Matt Damon were among those lighting up the red carpet all week.

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Selena Gomez has been appointed as the newest Ambassador for UNICEF. The Disney star will “use her voice, recognition and commitment to children’s issues” to support the organization’s mission to reduce preventable deaths among children.

“Every day 25,000 children die from preventable causes. I stand with UNICEF in the belief that we can change that number from 25,000 to zero,” Gomez says.

She is on her first field mission to Ghana, where “she will be looking at UNICEF child survival programs,” according to her rep.

Gossip Cop learned that she “was approached more than a year ago.” Last year Gomez was a spokesperson, but this year she has “now taken on an official role as an Ambassador,” says her rep, adding, “she will be involved in educating, advocating, and fundraising.”

Gossip Cop applauds the young “Wizards of Waverly Place” star for getting an early start on what we hope will be a long commitment to advocacy!

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Tennis fever seized New York this week!  See Will Ferrell and Jordin Sparks at the U.S. Open’s Arthur Ashe Kids Day, Rob Thomas and Christie Brinkley at the OPENing Gala, and Alec Baldwin showing off his skills at the Ross School.

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An eclectic mix of daytime’s brightest stars – including Ellen DeGeneres, Tyra Banks, Dr. Phil, Rachael Ray, and Elmo – made their way down the red carpet at the 2009 Daytime Emmy Awards.

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Sandra Bullock, Bradley Cooper, George Lopez, and Slash walked the red carpet with lots of other stars at the “All About Steve” premiere in Hollywood. Check out the photo gallery!

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Jason Bateman, Mila Kunis, Gene Simmons, and Jessica Stroup were among the stars who came out for the premiere of Mike Judge’s “Extract,” which stars Bateman and Kunis. Check out the gallery!

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Twilight‘s Kellan Lutz, Kara DioGuardi from “American Idol,” Ashlee Simpson-Wentz, and Eliza Dushku were just some of the celebs showing off their stylish sides at InStyle Magazine’s Summer Soiree in West Hollywood. Check out our photo gallery!

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Lindsay Lohan, Terrence Howard, and tons of other celebs joined cast members from “Inglourious Basterds” as the Quentin Tarantino movie had its New York City premiere.

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Check out the photo gallery from the Las Vegas premiere of “The Goods,” where Will Ferrell joined Jeremy Piven, Holly Madison, Kid Rock, and a host of other celebs.

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Check out the photo gallery from the Hollywood Foreign Press Association Installation Luncheon, where Evan Rachel Wood, Warren Beatty, and Eva Longoria Parker were just some of the stars on hand.

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Brad Pitt and Angelina Jolie were among the many stars shining on the red carpet at the famed Grauman’s Chinese Theatre for the film’s U.S. premiere.

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Check out Hollywood’s red-hot young stars on the red carpet at the 2009 Teen Choice Awards at Gibson Amphitheatre in Universal City, California.