Jennifer Lopez and Liberty Ross don't have much in common, but they do share a love of fashion. Given that both stars wore the same dress, Us Weekly wants to know: Who Wore It Best?

Lopez oozed sex appeal wearing a floor-length, full-sleeve gown from Tom Ford's Fall 2011 collection at the 4th Annual amfAR Inspiration Gala in New York City on Thursday, June 13. The "Live It Up" singer accessorized with Harry Winston jewels and attended the event with fashion designer Kenneth Cole, who is on the organization's board of directors.

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"I have my stylists, Robert [Zangardi] and Mariel [Haenn], help me  --and the team I've work with for years now," Lopez told reporters of getting dressed for the event. "We just have fun with it. We don't take it too seriously, but we definitely have fun with it."

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It was Ross, however, who first modeled the blue sequined when she wore it to the Snow White and the Huntsman premiere in London on May 14, 2012. (At the time, she was happily married to the film's director, Rupert Sanders. He was caught making out with the film's star, Kristen Stewart, two months later.) Both Ross, 37, and Lopez, 43, wore their hair slicked back.

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This isn't the first time in recent years that Lopez has worn the same designer duds as another star. She and Julianne Hough donned a tuxedo dress from the Rachel Zoe Collection (albeit different colors), and Lopez wore the same Lanvin sheath Emma Stone wore to a Vanity Fair party.

Tell Us: Who Wore It Best -- Jennifer Lopez or Liberty Ross?

This article originally appeared on Who Wore It Best: Jennifer Lopez vs. Liberty Ross?