Remember how everyone in the '90s was obsessed with massive breasts? Well breasts are out—and butts are in. BIG butts. And every celebrity is clamoring for them!

While there are rumors swirling over whether or not Kim Kardashian and Nicki Minaj have had their butts enhanced, some celebs (like Jenna Jameson and Heidi Montag) aren't keeping it a secret!

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Click through the gallery to see the before and after photos of stars who've admitted to getting butt implants.