After the stars pick out the perfect Academy Awards gowns, it's up to their glam squads to create stunning hair and makeup to match. While there were some old favorites -- loose updos, red lips and smoky eyes -- several celebs experimented with unexpected looks.

The Help's Jessica Chastain had a sexy, retro vibe with winged-out liner, nude lips and bombshell waves. "We wanted to keep her looking modern, fresh and super easy," hairstylist Jenny Cho told Us Weekly.

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Rose Byrne's glossy bob looked extra chic, thanks to a deep side-part and quickie pre-show bang trim from stylist Harry Josh. "In a sea of girls with long hair and evening gowns, she's a breath of fresh air," he said of the Bridesmaids star.

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Cameron Diaz opted for defined eyes, flushed cheeks and pink lips. "She just has one of those faces that you don't need to do a lot to it," makeup artist Robin Fredriksz told Us.