Best Dressed of the Week: Tia Mowry Is a Stone Cold Fox

Plus, must-see looks from Rihanna and others.

Tia Mowry - The Instant Mom star hits the red carpet at the Selma movie screening in a white Stone Cold Fox tuxedo dress and Top Shop shoes. With her braids swinging and a sexy, thigh-high slit, our girl is bad! By Jazmine A. Ortiz (Photo: Ben Gabbe/Getty Images)

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Tia Mowry - The Instant Mom star hits the red carpet at the Selma movie screening in a white Stone Cold Fox tuxedo dress and Top Shop shoes. With her braids swinging and a sexy, thigh-high slit, our girl is bad! By Jazmine A. Ortiz (Photo: Ben Gabbe/Getty Images)

Beyoncé, @beyonce - Yeah, Beyoncé is cute and she knows it. If you got it, flaunt it right?    (Photo: Beyonce via Instagram)

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Beyoncé - Bey stunts for the 'gram once again, this time in a multicolored Givenchy coat. We are feeling this look! (Photo; Beyonce via Instagram)

Curvalicious - Khloe Kardashian shows off her bodacious bod in a leather skirt and a plaid top tied at the waist as she arrives at Fusion Luxury Motors in California.(Photo: Juan Sharma/Bruja, PacificCoastNews)

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Khloe Kardashian - The reality star is serving a mean catwalk in a red-and-blue check shirt and leather pencil skirt. It’s totally a look that can easily be recreated, so we might just have to steal this one! (Photo: Juan Sharma/Bruja, PacificCoastNews)

Tessa Thompson - The Selma actress hits the film's premiere in New York City wearing a sparkly Rodarte gown. Shine on, girl.(Photo: Ben Gabbe/Getty Images)

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Tessa Thompson - The Selma actress hits the film's premiere in New York City wearing a sparkly Rodarte gown. Shine on, girl.(Photo: Ben Gabbe/Getty Images)

Rita Ora - The Roc Nation songstress channels a vintage starlet in these old school duds. Her gorgeous quilted coat is by Miu Miu.(Photo: Rita Ora via Instagram)

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Rita Ora - The Roc Nation songstress channels a vintage starlet in these old school duds. Her gorgeous quilted coat is by Miu Miu.(Photo: Rita Ora via Instagram)

Photo By Photo: Rita Ora via Instagram

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Keke Palmer - This fashionista is on the rise! The Cinderella star upped the ante on her sensible black and gray ensemble with yellow and black striped pumps. We love the combo.(Photo: PacificCoastNews)

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Keke Palmer - This fashionista is on the rise! The Cinderella star upped the ante on her sensible black and gray ensemble with yellow and black striped pumps. We love the combo.(Photo: PacificCoastNews)

Photo By Photo: PacificCoastNews

Famous Play Cousins - Her dad is the godfather of Quincy Jones's children.   (Photo: Splash News)

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Kat Graham - While searching for her next slayage, the actress is caught shopping in L.A. in a fur coat, crop top, high-waisted lace Louis Vuitton skirt, black Gucci pumps and a yellow tote. (Photo: Splash News)

Rihanna - For a fun mix of casual and glam, the newly-minted global ambassador and creative director of Puma is seen in the brand's sneaks and some swanky attire. (Photo: Splash News/Puma)

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Rihanna - For a fun mix of casual and glam, the newly-minted global ambassador and creative director of Puma is seen in the brand's sneaks and some swanky attire. (Photo: Splash News/Puma)

Kylie Jenner - Taking a cue from her older sis Kim, Kylizzle sports a neutral palette while bringing some holiday cheer to patients at Children’s Hospital of Los Angeles. The look is simple but definitely new ground for her. (Photo: Lilly Lawrence/WireImage)

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Kylie Jenner - Taking a cue from her older sis Kim, Kylizzle sports a neutral palette while bringing some holiday cheer to patients at Children’s Hospital of Los Angeles. The look is simple but definitely new ground for her. (Photo: Lilly Lawrence/WireImage)

Jennifer Lopez - J.Lo glows at the People Magazine Awards in a Naeem Khan Spring/Summer 2015 white beaded jumpsuit. Gorg! (Photo: Jason Merritt/Getty Images)

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Jennifer Lopez - J.Lo glows at the People Magazine Awards in a Naeem Khan Spring/Summer 2015 white beaded jumpsuit. Gorg! (Photo: Jason Merritt/Getty Images)

Photo By Photo: Jason Merritt/Getty Images