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Stacy Keibler, George Clooney

Mark Davis/Getty Images; Jason LaVeris/FilmMagic

Just few nights after some partying into the wee hours in Las Vegas without boyfriend George Clooney, Stacy Keibler was out again last night sans her man.

So what was blond beauty up to and where was the Oscar nominee? Read on to find out...

Keibler and a girlfriend were among the VIPs who were at Club Nokia in downtown Los Angeles for iHeartRadio's Coldplay charity concert.

The former Dancing With the Stars contender was looking casual chic in black pants, red top and black leather jacket. She and her pal were pretty low-key, snapping some pics on their cellphones and dancing a couple of times during the 90-minute show.

Mr. Clooney, meanwhile, was taking care of some awards season business at the SilverScreen Theater in West Hollywood. He and his The Descendants director, Alexander Payne, headlined the latest installment of the New York Times' TimesTalks series with the newspaper's David Carr. (We'll have more on that later!)

Keibler certainly wasn't the only bold-faced name at Coldplay. The band was introduced by E!'s own Ryan Seacrest. Coldplay frontman Chris Martin's wifey, Gwyneth Paltrow, enjoyed the show from an upper deck front row seat alongside her mom, Blythe Danner (gotta love that!), a very blond Cameron Diaz and Rashida Jones. Sitting next to Keibler were Nicole Richie and hubby Joel Madden as well as his brother, Benji.

Seacrest's girlfriend, Julianne Hough, came with Ashley Tisdale. J.H.'s brother, Dancing With the Stars hottie Derek Hough, was also there.

Proceeds from the show benefited A Place Called Home and Youth Mentoring Connection, two Los Angeles based youth charities.