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Issa Rae

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The Insecure star hosted the fourth annual Diamond Ball last night in New York City (which benefits Rihanna's Clara Lionel Foundation) and looked every bit as bright and beautiful as an actual diamond. Check out her swoon-worthy gown and all the best celebrity styles this week. 

Issa Rae

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Where: 4th Annual Diamond Ball in New York City 

Wearing: Valentino gown 

Emma Stone

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Where: At the premiere of the new Netflix series Maniac in London

Wearing: Louis Vuitton camisole and pants, Louis Vuitton sandals, Petite Malle clutch

Anna Kendrick

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Where: At the New York premier of A Simple Favor

Wearing: Cushine Resort 2019 

Gigi Hadid

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Where: At the #BoF500 gala dinner in Brooklyn 

Wearing: Brandon Maxwell Spring 2019 

Rihanna

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Where: 4th Annual Diamond Ball in New York City 

Wearing: Alexis Mabille Fall 2018 Haute Couture 

Suki Waterhouse

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Where: At the the premiere of Assassination Nation in Hollywood 

Wearing: Christian Dior Cruise 2019 

Penelope Cruz

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Where: At the Todos Lo Saben photocall in Madrid 

Wearing: Chanel 

Keira Knightley

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Where: At The Late Show With Stephen Colbert in New York City 

Wearing: Valentino Fall 2018 Haute Couture and Jimmy Choo sandals 

Olivia Munn

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Where: At a screening of The Predator in Hollywood

Wearing: Laura Basci gown, Christian Louboutin pumps and Neil Lane jewels

Olivia Wilde

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Where: At the Los Angeles premiere of Life Itself 

Wearing: Andrew Gn Resort 2019

Julianne Moore

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Where: At the New York City premiere of Bel Canto

Wearing: Saint Laurent by Anthony Vaccarello