If Cannes fashion has been any indication, the long white dress is back in a very big way—hello Uma Thurman, Cheryl Cole, and, yes, Jane Fonda. So, it's nice to see Britney Spears on the right side of the trends as the June cover girl of Harper's Bazaar. The songstress seriously stuns in the NYC-based publication, with a golden-glowed Spears gazing with a semblance of sanity over her shoulder in a stunning Bill Blass, white, $1,450 dress. She also changes up her usual gas station-chic wardrobe for pieces from Dolce & Gabbana (that's the $4,995 gown covered in stars, above), Emanuel Ungaro, Isabel Marant, Givenchy, and Blumarine. While, in the typical straitjacket fashion of Brit's managers, the interview was conducted over a phone, Spears did manage to sound normal (though no word on whether that nasal pitch was acting up), chatting about Justin Bieber ("I think he's adorable"), American Idol (she wants to be a judge), and Lady Gaga ("I love her spin on everything."). Asked if she's changed, she replied: "I think things through a little bit more, and I worry a lot. I'm more straightforward, and I speak up more than I did before."