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While some celebrities stunned in classic gowns and sharp tuxedos, others missed the mark.
See the best and worst dressed stars at the 2017 SAGs, ahead.

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BEST: Yara Shahidi
Black-ishactress Yara Shahidi turned heads in a bright Naeem Khan gown.
BEST: Judith Light
Judith Light went bold in a chic Tom Ford gown.
TheTransparentactress stepped out in the close-fitting cobalt blue number with velvet panels.

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TheLionstar kept her hair and makeup simple, keeping the focus on her avian appliques and sequined layers.
BEST: Viola Davis
Viola Davis was the picture of old Hollywood beauty at the SAG Awards.
TheFencesstar stunned in a strapless white gown by Vivienne Westwood.

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BEST: Maisie Williams
Maisie Williams vamped it up.
TheGame of Thronesactress looked glam in a simple pale pink dress paired with a dramatic dark lip.
BEST: Mahershala Ali
Mahershala Ali was debonair in a white tuxedo.

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TheMoonlightandHidden Figuresactor added a bow tie and a pocket square to the well-cut suit.
BEST: Michelle Williams
Michelle Williams sparkled at the awards show.
TheManchester by the Seaactress looked gorgeous in a metallic Louis Vuitton gown.

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The actor took his black formal wear to the next level in a well-cut velvet.
The star chose a layered, multicolored Marchesa dress with an intricate high neck.

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