In or Out: Reese Witherspoon in Giambattista Valli

Enough with the Miss Great Britain Pageant, kittens. Let's rip on an All-American girl.

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In or Out: Anna Kendrick in Zuhair Murad

A bod for sin (but you can barely tell).

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In or Out: Hayden Panettiere in Julien MacDonald

She's come undone.

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In or Out: Rachel Bilson in Chanel

Isn't she?

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In or Out: Zoe Saldana in Isabel Marant

Interpretive dressing.

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In or Out: Scarlett Johansson in Roland Mouret

Miss Scarlett in the conservatory.

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In or Out: Jennifer Lopez

She just can't help herself and neither can we.

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In or Out: Gwyneth Paltrow in Vionnet

The "Gwynnie's Paw's Down Home Cookin' Tour" continues.

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In or Out: Halle Berry in Roberto Cavalli

Pretty in pink.

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Jennifer Lopez in Georges Chakra on American Idol

Puff Diva.

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In or Out: Rihanna in Carlos Miele on American Idol

She wore gray velvet.

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In or Out: Cynthia Nixon in Carolina Herrera

Showers of flowers.

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In or Out: Kim Cattrall in Michael Kors

Tossing out an easy one for you.

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In or Out: Kirsten Dunst in Proenza Schouler

Don't go breaking our hearts.

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In or Out: Saoirse Ronan in Chanel

T Lo are mean.

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In or Out: Uma Thurman in Lanvin

A cry for help.

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In or Out: Eva Longoria in Bocanegra

Tap-tap-tappin' her heart out.

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In or Out: Helen Mirren in Alberta Ferretti

Power to the people.

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In or Out: Diane Kruger in Jason Wu

A house divided, yet still fabulous.

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In or Out: Shania Twain in Zuhair Murad

It's not easy being green.

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