Hollywood Trend Watch: Sexy White Dresses

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Cheryl Cole

The 27-year-old Brit wore a white, long-sleeve Stéphane Rolland gown with a seriously plunging neckline and gold accents at the waist to the Habemus Papam premiere in Cannes.

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Rosie Huntington-Whiteley

The 24-year-old Transformers star stood out in a sea half-naked starlets at the Maxim Hot 100 party in a white Max Mara shift dress with a completely backless design.

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Gwyneth Paltrow

The 38-year-old actress donned a long, white Emilio Pucci gown with skin-revealing slashes at the premiere of Country Strong. We're still wondering how it was held together and what, if anything, she wore under it.

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Emma Roberts

The 20-year-old Scream 4 star chose a white one-shoulder Michael Kors dress with a skin-baring cutout design for this year's Met Gala.

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Jane Fonda

The 73-year-old(!) actress made a jaw-dropping entrance at the Sleeping Beauty premiere in a form-fitting custom Emilio Pucci gown with embellished sheer panels.

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Jennifer Lawrence

The 20-year-old Hunger Games actress sported a Dolce & Gabbana dress with a white bustier top and lace maxi skirt at the 2011 Independent Spirit Awards.

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Penelope Cruz

The 37-year-old star hit the Pirates of the Caribbean: On Stranger Tides premiere in London wearing a white Givenchy Haute Couture by Riccardo Tisci gown with zipper details.

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Rachel McAdams

After a super chic turn in Cannes, the 32-year-old star hit up a NYC screening for Midnight in Paris wearing an ivory silk Louis Vuitton gown with a thigh-high slit.

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Sarah Jessica Parker

The 47-year-old style icon wore a white embroidered Dolce & Gabbana dress accessorized with several strands of pearls and a waist-cinching belt to the The Weinstein Company VIP Press Event in Cannes.