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Kardashian little sis Kylie Jenner is trading up from a 4,851-square-foot, mock-Mediterranean house in Calabasas, CA, where half-sisters Kourtney and Khloe own homes, to a 7,040-square-foot estate in Hidden Hills. Young Jenner paid $6 million, according to property records and Variety.

The 18-year-old media and makeup mogul now owns a six-bedroom, 6.5-bathroom mansion that sits on 3.15 acres alongside open, undeveloped space. The house features a double-height foyer, walk-in wine cellar, wide-plank wood floors, and a kitchen with two islands. Most important, the teenager's mansion is in the same hood as Kim Kardashian and mama Kris Jenner, who also own Hidden Hills homes.

Here's a helicopter video of the house produced by X17 Online.

Jenner was formerly attached at the hip to rapper Tyga. Rumors have swirled about the impending leak of a sex tape recorded before the couple split.

If you're having a hard time keeping your Kardashians straight, Jenner is the one with 61 million Instagram followers and has been dubbed one of the 10 most followed celebrities on the photo-sharing site. Last year, she launched Kylie Cosmetics and Kylie, the app, which is an "all-access pass to Kylie's life," the description says, and features beauty tutorials and glimpses of Kylie's favorite products.