Todd Williamson/WireImage

WHAT SHE WORE Mara wore an aqua Peter Som cocktail dress with a jeweled bib necklace, Samantha Wills ring and Maia N. clutch to the 127 Hours premiere in Beverly Hills.

CELEBRITY: Kate Mara

DESIGNER: Peter Som

TREND: Blue

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Kate Mara

Kate Mara in Peter Som

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