{babes} Julia Roberts's Lancôme Debut

After likening her ambassadorship with Lancôme to "every girl's dream," Julia Roberts is finally unveiling her dreamy debut print ad for Définicils Precious Cells Amplifying Mascara–and she's giving PEOPLE an exclusive behind-the-scenes look. Shot by Mario Testino in a private apartment in the TriBeCa neighborhood of New York City last winter, the ad presents an ethereal take upon which the classic French beauty brand was founded. The campaign is scheduled to bow in August issues of major fashion, beauty and lifestyle publications. The $29 lash-building product is currently available exclusively at Nordstrom stores but will expand to Lancôme counters across the nation this August. Tell us: What do you think of the pretty woman's Lancôme debut?