Who: Cameron Diaz
Cameron Diaz,best dressed,celebrity fashion,Week in Style
Who: Cameron Diaz
Where: At the premiere of her new film My Sister\'s Keeper, in New York.
Wore: A white diametrically rippled dress by J Mendel with a gold Roger Vivier clutch and metallic strappy peep-toe heels by Pierre Hardy.
Who: Julia Restoin-Roitfeld
best dressed,celebrity fashion,julia restoin-roitfeld,Week in Style
Julia Restoin-Roitfeld
Where: At the Hugo Boss show during Men\'s Fashion Week in Paris.
Wore: A black and white print skirt with a black button-down top and black peep-toe shoe boots.
Who: Dasha Zhukova
best dressed,celebrity fashion,Week in Style,Dasha Zhukova
Dasha Zhukova
Where: At the electric car Tesla launch party in London.
Wore: An oversize cream blazer over a white scoop-neck top and denim cut-offs with a zig-zag pattern clutch and snakeskin pumps.
Who: Margherita Missoni
best dressed,margherita missoni,celebrity fashion,Week in Style
Margherita Missoni
Where: At the Milan Women Awards in Italy.
Wore: Navy silk wide-leg trousers with a grey crossover-knit top and a gold sequinned obi belt, all by Missoni.
Watch Margherita Missoni in our video
Who: Zoe Saldana
best dressed,celebrity fashion,zoe saldana,Week in Style
Zoe Saldana
Where: At the BET awards in Los Angeles.
Wore: A cream dress with waist cut-outs by Calvin Klein and grey platform buckle heels by Brian Atwood.
Who: Blake Lively
best dressed,celebrity fashion,Blake Lively,Week in Style
Blake Lively
Where: At the Swarovski Crystallized Concept store grand opening in New York.
Wore: A cream jersey dress with an open back and black net inserts by Roberto Cavalli and t-bar studded heels by Manolo Blahnik.
See Blake Lively\'s Fashion Face-off with Leighton Meester
Who: Marion Cotillard
best dressed,Marion Cotillard,celebrity fashion,Week in Style
Marion Cotillard
Where: At the Los Angeles premiere of her new film Public Enemies.
Wore: A diamond pattern dress by Elie Saab with a black clutch and silver metallic peep-toe heels by Jimmy Choo.
Who: Isabel Lucas
best dressed,celebrity fashion,Isabel Lucas,Week in Style
Isabel Lucas
Where: Out and about in Los Angeles.
Wore: An orange sequinned tie-dye gypsy skirt with a white vest, a brown tan across-the-body bag and black espadrilles.
More pictures: You Should Know About... Isabel Lucas
Who: Megan Fox
best dressed,celebrity fashion,megan fox,Week in Style
Megan Fox
Where: Arriving for her appearance on the Ed Sullivan Show in New York.
Wore: A black plunge-neck dress with net décolleté by Hervé Leroux, and black open toe heels by Courtney Crawford.
Who: Beyoncé
Beyonce,best dressed,celebrity fashion,Week in Style
Beyoncé
Where: At the BET Awards in Los Angeles.
Wore: A patterned peak shoulder dress by Balmain, oversize jade hoop earrings and purple mesh tassle-heeled shoes.
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