H'wood Party Girl

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Wanna know a secret? Even celebs who get huge paychecks love a deal...which explains why every star who isn't in the south of France for Cannes was at Barneys Thursday night.

Rogan Gregory's new eco-friendly line debuted at swanky Barneys in Beverly Hills before it goes on sale in Target. Fashionistas like Rachel Bilson, Becki Newton and Nicky Hilton were on hand to snag pieces, which are all priced under $44.99.

Marcia Cross confessed she's a Target regular. "I buy everything! I can't get out of there without a huge bill."

I asked the mother of twins if she had any advice for Angelina Jolie, who's also expecting two. "She can come over for a playdate if she wants to!" Marcia joked.

Whitney Port was also on hand, representing for The Hills and buying a bunch of clothes. Even though season three wrapped up this week, she told me the cameras are still rolling. "We've actually already started filming our fourth season," she said, adding that Audrina Patridge hasn't moved out of Lauren Conrad's guest house, as far she knows.

So does that leave any time for fun vacations? "I'll be going to Missouri with my family like I do every summer, but other than that, I'll probably be here working [at People's Revolution]," Whitney said.

Guess there really is no rest for the weary.