Best Dressed of the Week: Rihanna Gets Glam for Diamond Ball

Plus, must-see looks from Laverne Cox, Solange and others.

The First Diamond Ball - Being the bad girl doesn’t mean you relinquish the responsibility to do good. Rihanna shows us that she’s more than social pop candy with her first-ever Inaugural Diamond Ball. This brave new initiative on her part served to raise money for the Clara Lionel Foundation, which works to improve the quality of health, education and arts for communities around the world.   (Photo: Jason Merritt/Getty Images)

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Rihanna - At the first-ever Diamond Ball in Beverly Hills, RiRi serves some serious Hollywood glamor in a mauve Zac Posen off-the-shoulder gown. She steals our hearts, and our top spot for best dressed, in this creation. By Jazmine A. Ortiz (Photo: Jason Merritt/Getty Images)

Beyoncé - At the New York City premiere of Annie, we know Bey is “feeling herself” in her "Daria" coat by KISUA. Her matching heels and fedora really set this outfit off! (Photo: Splash News)

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Beyoncé - At the New York City premiere of Annie, we know Bey is “feeling herself” in her "Daria" coat by KISUA. Her matching heels and fedora really set this outfit off! (Photo: Splash News)

Zendaya - The fashionista uses the streets of Los Angeles as her runway. The actress is spotted at Soho House in West Hollywood in a Vivienne Westwood green leaf-print collared dress. (Photo: PacificCoastNews)

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Zendaya - The fashionista uses the streets of Los Angeles as her runway. The actress is spotted at Soho House in West Hollywood in a Vivienne Westwood green leaf-print collared dress. (Photo: PacificCoastNews)

Photo By Photo: PacificCoastNews

Werk! - Kim Kardashian is always picture perfect.  Here, she's straight off the pages of the magazine as she leaves her home in New York City.(Photo: Allan Bregg / Splash News)

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Kim Kardashian - Always one for a monochromatic look, Mrs. West kills it in olive green. She even brings more drama, thanks to a long, leather trench. (Photo: Allan Bregg / Splash News)

Solange Knowles - Solo has been having a winter white moment as of late. Wearing a Camilla and Marc shirt, Jonathan Simkhai white, sheer, detail skirt and Loeffler Randall perforated mules, she slays at Art Basel Miami. (Photo: Christopher Peterson/Splash News)

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Solange Knowles - Solo has been having a winter white moment as of late. Wearing a Camilla and Marc shirt, Jonathan Simkhai white, sheer, detail skirt and Loeffler Randall perforated mules, she slays at Art Basel Miami. (Photo: Christopher Peterson/Splash News)

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Rosario Dawson - Not everything that glitters deserves to shine, but this Theia Couture gown is worthy of a place on this list. The Top Five actress is a silver stunner at Art Basel Miami. (Photo: Thaddaeus McAdams/WireImage)

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Rosario Dawson - Not everything that glitters deserves to shine, but this Theia Couture gown is worthy of a place on this list. The Top Five actress is a silver stunner at Art Basel Miami. (Photo: Thaddaeus McAdams/WireImage)

Aja Naomi King - The How to Get Away With Murder actress looks like a dream in a pastel blue, deep v-neck skater dress, flaunting some serious décolletage. Her nude pumps are the perfect match. (Photo: Frederick M. Brown/Getty Images)

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Aja Naomi King - The How to Get Away With Murder actress looks like a dream in a pastel blue, deep v-neck skater dress, flaunting some serious décolletage. Her nude pumps are the perfect match. (Photo: Frederick M. Brown/Getty Images)

Freida Pinto - Orange you jealous of Freida Pinto’s gorgeous gams? She’s owning her asymmetrical dress and the red carpet at the Audemars Piguet Presentation in Miami. (Photo: Larry Marano/Getty Images for National YoungArts Foundation)

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Freida Pinto - Orange you jealous of Freida Pinto’s gorgeous gams? She’s owning her asymmetrical dress and the red carpet at the Audemars Piguet Presentation in Miami. (Photo: Larry Marano/Getty Images for National YoungArts Foundation)

Photo By Photo: Larry Marano/Getty Images for National YoungArts Foundation

Jourdan Dunn - The Victoria’s Secret model shows off her flawless physique in a black crop top and skirt set at Paper magazine’s “Breaking the Internet” issue release party in Miami. (Photo: Dimitrios Kambouris/Getty Images for Paper)

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Jourdan Dunn - The Victoria’s Secret model shows off her flawless physique in a black crop top and skirt set at Paper magazine’s “Breaking the Internet” issue release party in Miami. (Photo: Dimitrios Kambouris/Getty Images for Paper)

Photo By Photo: Dimitrios Kambouris/Getty Images for Paper

No Entry - Recently, a North Carolina bill was signed by Gov. Pat McCrory, stating transgender individuals will be required to use bathrooms that match their “biological sex” and other laws that will affect everyone in the state. With the bill receiving major attention, it’s become a major hot topic during this election season. From R. Kelly’s transgender son, Jay Kelly, to the newest addition to the Love & Hip Hop cast, D. Smith, these transgender stars will not be happy if this is passed.(Photo from left: Noam Galai/Getty Images)

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Laverne Cox - This actress may star in Orange Is the New Black, but she knows nothing ever beats an LBD. She arrives at the 4th annual “Home for the Holidays” Benefit Concert in a Marc Bouwer cape dress. (Photo: Noam Galai/Getty Images)