3:47 PM PST, February 21, 2012
Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
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Jena Malone

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Kate Flannery

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Ali Graynor

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Paula Patton

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Marcia Gay Harden

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Kate Mara

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Rashida Jones

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Olivia Munn

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Jessica Chastain

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Ali Larter

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Maggie Grace

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Emmy Rossum

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Kathleen Robertson

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Hayden Panettiere

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Anna Kendrick

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Mary Elizabeth Winstead

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Malin Akerman

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Marley Shelton

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Shailene Woodley

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Amy Adams

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Stacy Keibler

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA.
Fierce Fashions: Hot Looks of the Vanity Fair Party

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Hollywood's sexiest ladies got gussied up for the Vanity Fair and Juicy Couture Vanities 20th anniversary party at Siren Studios on February 20, 2012 in Hollywood, CA. Taka a look at these dynamic dames in their dazzling duds!