Star Style: Gwen Stefani

Peek at some of the trend-setting singer's most fashionable moments, selected by PEOPLE style expert Susan Kaufman. By Serena Kappes

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FLOWER GIRL

"It's a bit grown-up and womanly look that's still fun," says Kaufman of Stefani's 1940s-inspired Louis Vuitton ensemble at the MTV Video Music Awards (in August). "She's having a femme moment. The details of the outfit are very romantic," but the red flower adorning her hair vamps up the look.