Jennifer Aniston Smiles, Styles Sexy Blonde Wig on Set the Day After Her 44th Birthday

USMagazine, Thursday, February 14, 2013, 9:52am (PST)

Blond bombshell birthday girl! Jennifer Aniston hit the set of her new movie, the Untitled Elmore Leonard Project, on Tuesday, Feb. 12 looking happy and sexy in a platinum blonde wig.

The actress had a big smile on her face on the Stamford, Conn. set, after marking her 44th birthday the day before. "They just come rapid-fire," Aniston joked about her birthday in an interview with Women's Wear Daily on Feb. 10. "I feel like the last one just happened! I want to say, 'Let's slow down.' I have fun all the time, so I'm not worried. I can have a form of a birthday any day."

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And why wouldn't Aniston have every reason to be happy? The Wanderlust star became engaged to actor Justin Theroux in August 2012, and she's been busy filming back-to-back movies.

"It's a quick, five-week shoot, and we're having a ball," Aniston told WWD of her new project. "The director, Daniel Schechter, really knows what he wants. It's a dark thriller-caper comedy, and Tim Robbins and Isla Fisher are also featured."

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Why is it still untitled? "The book's called The Switch, but we can't use that given I did a movie with the same name a few years ago," she explained, referring to the 2010 movie in which she starred opposite Jason Bateman.

Like her last project, We're the Millers, Aniston has been wearing a wig on set. But hopefully this wig works a little better.

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"It was about 100 percent humidity, so the frizz factor was through the roof," Aniston explained of filming in North Carolina. "I brought along Living Proof products with a healthy skepticism. I wore a half-wig on this film, and the girl who was washing the hairpiece wasn't using my shampoo," the actress, a spokeswoman for the hair care line Living Proof, said. "So we would go outside and the rest of my hair would be totally tame and perfect, and the top [wig] part —- which I called my toupee -- would just start to look like pubic hair. It would take on a whole new texture of its own. I kept thinking, 'This is funny. Someone should be rolling a camera on this, right here.'"

This article originally appeared on Usmagazine.com: Jennifer Aniston Smiles, Styles Sexy Blonde Wig on Set the Day After Her 44th Birthday