Lights! Camera! Cannes!Kristen Stewart, Reese Witherspoon and more look très chic at the French awards festival known as much for fashion as it is for film

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KRISTEN STEWART

Red alert! Kristen may be setting a new record for most glam at Cannes in her plunging crimson Reem Acra gown, complete with lace inserts and a seriously sexy back – which she wore to the premiere of love Robert Pattinson's film Cosmopolis.