Olivia Wilde, Ashley BensonAndrej PejicPerez HiltonBirdy, Jeff Koons & Nicky Hilton attended the H&M Flagship Fifth Avenue Store launch event at the H&M Flagship Fifth Avenue Store on July 15 in New York City.

The event was in celebration of artist Jeff Koons, who redecorated the store, turning it into a mini Koons exhibit in advance of his retrospective at the Whitney.

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Olivia Wilde with the special-edition Jeff Koons for H&M balloon-dog bag.

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Ashley Benson

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Nicky Hilton

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Perez Hilton

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Andrej Pejic

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Birdy, Jeff Koons

Janet Mayer / PRPhotos.com