We round up the 20 most memorable celebrity fashion looks from the week, from Michelle Obama's canary yellow Prabal Gurung gown to Kate Middleton's blue L.K. Bennett dress to Jessica Alba's wide-legged white trousers. We wish we had them all in our wardrobes...
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(Images: Rex Features)
Nina Dobrev
In a Zuhair Murad frock at the premiere of Let's Be Cops in Los Angeles on 7 August.
Elisabeth Moss
In a Chloe dress at the premiere of The One I Love in Los Angeles on 7 August.
Marion Cotillard
In a Christian Dior dress at the premiere of Two Days, One Night in London on 7 August.
Reese Witherspoon
Out shopping in Beverly Hills on 7 August.
Kate Mara
Out and about in the East Village, New York on 7 August.
Alessandra Ambrosio
Out and about in Los Angeles with her daughter on 6 August.
Katie Holmes
In a Michael Kors jumpsuit at the premiere of Life Is Amazing in New York on 6 August.
Melanie Brown
In a Roksanda Ilincic dress on America's Got Talent in New York on 6 August.
Taylor Swift
Wearing Timberland shoes and a Max Mara bag while out and about in New York on 6 August.
Megan Fox
In an Oscar de la Renta dress at the premiere of Teenage Mutant Ninja Turtles in New York on 6 August.
Gizzi Erskine
In her trademark 60s-inspired style at the 'On Blackheath' festival party on the John Lewis Roof Garden in London on 6 August.
Catherine Duchess of Cambridge
In a L.K. Bennett dress at the 'Blood Swept Lands and Seas of Red' installation by Paul Cummins at the Tower of London on 5 August.
Michelle Obama
In a Prabal Gurung dress with President Barack Obama and his Excellency Dr. Boni Yayi, President of the Republic of Benin, at the US-Africa Leaders Summit in Washington DC on 5 August.
Diane Kruger
With boyfriend Joshua Jackson at a screening of The One I Love in New York on 5 August.
Rosie Huntington-Whiteley
Out and about in Los Angeles on 5 August.
Jessica Alba
In a Lauren Moshi tank top while out and about in New York on 5 August.
Jessica Alba
The actress and business-woman changed into alice + olivia button down blouse on the same day in New York on 5 August.
Christina Hendricks
In a Temperley London jumpsuit while out and about in London on 4 August.
Daisy Lowe
Out and about in London on 4 August.
Cate Blanchett
In a floral dress while out and about in New York on 3 August.