Billie Jean King turns 75 next week, and, in celebration, the New-York Historical Society hosted an "early birthday party" for her on Wednesday, with guests including Maria Sharapova and John McEnroe ...

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As well as the likes of Cyndi Lauper, Sara Bareilles and Emma Stone.

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The event was also in support of the museum's "Billie Jean King: The Road to 75" exhibit, which is a tribute both to King's tennis career and to her work in support of gender equality.

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The collection will stay on display at the New-York Historical Society until Jan. 27.