Elle Fanning

Fanning wore a Rodarte tan and gold embossed dress, with Rodarte socks and Nicholas Kirkwood for Rodarte heels, at the premiere of Somewhere on Dec. 12 in New York.

Evan Agostini / AP Photo

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Fanning wore a white Opening Ceremony shirt dress, cardigan sweater, and Mary Jane shoes at Variety's screening of Somewhere in Los Angeles on Dec. 8.

David Livingston, WireImage / Getty Images

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To attend Somewhere's Los Angeles premiere, Fanning wore a black Valentino bell dress and beaded shoes.

Jason Merritt / Getty Images

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At the Governor's Awards in Los Angeles in November, Fanning wore a Valentino Resort 2011 dress, covered in flowers with a bow.

Steve Granitz, WireImage / Getty Images

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At the world premiere of The Nutcracker in 3D, Fanning opted for a sparkling blue minidress and a matching headband.

Jesse Grant, WireImage / Getty Images

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Fanning wore a Marchesa beaded minidress at Elle magazine's 17th Annual Women in Hollywood Tribute in Beverly Hills on Oct. 18.

Matt Sayles / AP Photo

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At Somewhere's premiere at the Venice Film Festival in September, Fanning strode onto the red carpet in a Marc Jacobs teal and aqua mini dress and Marc Jacobs metallic pumps.

Andrew Medichini / AP Photo

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Waving to a crowd at the Venice Film Festival, Fanning looked cute in a blue checked and ruffled Opening Ceremony x Pendleton dress, red knee socks, and a pair of Doc Martens.

Andrew Medichini / AP Photo

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To attend the premiere of The Twilight Saga: Eclipse, which stars her sister Dakota, Fanning wore a pair of black pants, a white and black lace top, and combat boots.

Chris Pizzello / AP Photo

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The Fanning girls wore dark dresses with applique flowers at the Optimish Youth Homes and Family Services Mentor Awards Dinner in October 2008.

Alberto E. Rodriguez / Getty Images

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In a ruffled blue dress and matching eyeglasses, Elle swanned at the premiere of Phoebe in Wonderland during the Sundance Film Festival in 2008.

Bryan Bedder / Getty Images

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At the Kid's Choice Awards in March, 2007, Elle and Dakota wore spring linen dresses and colorful necklaces.

Lisa Rose / AP Photo

Elle Fanning

With a ballet-dancer frame perfect for Rodarte and Valentino, the 12-year-old star of Sofia Coppola's new film, Somewhere, has emerged as a fashion-world darling. See pictures of Elle Fanning's sartorial evolution.