Cheryl Cole was all smiles in a Sonia by Sonia Rykiel dress with Marc by Marc Jacobs wedges for fans during her arrival for auditions in Chicago on May 20, 2011.

Polka-dot cotton and silk-blend dress
$495 at net-a-porter.com

Spotted canvas and patent-leather wedges
$395 at net-a-porter.com

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Tags: Cheryl Cole, Sonia by Sonia Rykiel, Marc by Marc Jacobs