Jessica Alba in Mary Katrantzou at the 2013 Nickelodeon Kids' Choice Awards

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The LA sun was shining for the 2013 Nickelodeon Kids’ Choice Awards and the A-listers went all out in brights with Jessica Alba, Kristen Stewart and Katy Perry rocking the purple carpet.

Rocking a royal blue checkered Osman Yousefzada pairing of micro shorts and a tailored top, Kristen Stewart matched the regal hue with a deep blue shimmer around her kohl-rimmed eyes and completed the look with an edgy fishtail plait to pick up two awards on the night.

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Jessica Alba, meanwhile, went for a ladylike look in a stunning Mary Katrantzou Spring Summer 2013 currency print fit-and-flare frock, teamed with super cute Christian Louboutin bow courts and a Stella McCartney clutch.

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And winning Favourite Female Singer, Katy Perry dared to bare her midriff in a Herve Leger by Max Azria crop top and pencil skirt printed pairing. Christian Louboutin pumps, Nikki Baker earrings and Melinda Maria completed her award-winning look.

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Kristen Stewart in Osman at the 2013 Nickelodeon Kids' Choice Awards