Kim Kardashian has gone through an evolution over the years. And that evolution has been bootylicious to say the least. She’s always had an astonishing backside but it’s been growing larger over the years. Getting that Instagram-worthy booty isn’t entirely impossible to achieve but, Kim’s ever-growing butt has aroused plenty of suspicion. Butt implants have been a popular theory for the reality superstar’s large behind, however she has never admitted to it.

Of course, It’s natural to have a larger backside in your 30s than your 20s. But questions begin to arise when that booty doesn’t match the rest of your body. Has she simply been working out? How can someone so slender have such a big booty? Kim’s butt may very well be the most discussed booty of all time. So much so that it’s worth taking a look back at the history of the reality star’s famous derriere.

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She hasn’t always looked the way she does. One look at her older photos and you’ll see that she wasn’t always as bootylicious. But times have changed and her booty’s been an important part of her brand. In fact, she’s gone through great lengths to ensure her millions of fans get the very best booty pics. Her behind is mighty fine—but has the reality star taken the surgical route to enlarge that booty? The sizzling photos below may give help you decide for yourself.

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