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Most Beautiful 2014

25 Beauties (and Hotties) at 25

From Amanda Seyfried to Armie Hammer, check out Hollywood's hottest crop of stars turning 25 this year

ROONEY MARA

The rising star followed up her breakout role in The Social Network by chopping off her long locks, bleaching her eyebrows and undergoing several body piercings to portray The Girl with the Dragon Tattoo. "I didn't even have pierced ears," Mara told W of her startling transformation. "They put four holes in each ear, and, weirdly, that hurt the most."