The week's best celebrity style: Rachel McAdams, Reese Witherspoon and Cara Delevingne

Whether they were on the red carpet or circling the airport, the stars kept it glam this week in everything from Alaïa to Alice and Olivia.

Rachel McAdams made her Hollywood resurgence in a bold Zuhair Murad creation at the screening of ‘A Most Wanted Man,’ while Reese Witherspoon made her way through downtown L.A. in geometric Proenza Schouler heels and a classic denim jacket.

And there was no more glamorous event this week than Leonardo DiCaprio’s star-studded St. Tropez fundraiser, where Cara Delevingne opted for a sexy two-piece tuxedo.

Also among our top picks were Anna Faris, Daisy Lowe and Eva Longoria.

CLICK THE IMAGE FOR THE GALLERY OF STYLISH STARS:

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