Jennifer Aniston’s sexy new roles!

An insider tells Life & Style that Jennifer Aniston — and her equally famous tresses — is in talks to pocket a cool $10 million as the new spokeswoman for L’Oréal in a series of hair commercials she’ll film this summer and that will air overseas, though her rep denies this.

“Jen’s reinventing her image,� says the insider. “She’s going to look more dangerous and alluring than ever before.�

A buddy of Brad Pitt’s, David Fincher, who worked with Jen’s ex on Fight Club and the upcoming film The Curious Case of Benjamin Button, will direct the spots. “Jen turned to David because she loves his work,� says the insider.

“The commercials will be like mini action movies,� says the insider, who adds that Jen will play the hero. “She’s been dying to do an action film, and this will show she can pull it off. People are going to have to look twice to recognize her!�

Jennifer Aniston is starring in her first U.S. ad campaign, for Smart water, and billboards featuring her be plastered all over LA and other cities.