Karlie Kloss' Younger Sister Kimberly Steals the Show at 'Paper Towns' Premiere

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They got it from their mama?

While it's no secret that 22-year-old supermodel Karlie Kloss is a stunner, it was actually her younger sister Kimberly, 20, that had people doing double takes when she accompanied Karlie to the Paper Townspremiere in New York City on Tuesday.

Sporting a sexy white dress and black heels, Kimberly proved the Kloss family is definitely blessed in the genetics department.

PHOTOS: Genetic Jackpot! Top Celebrity Kids Turned Models

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Taylor Swift's BFF adorably showed her younger sis a good time, taking this cute selfie with Paper Towns writer John Green and the film's stars, fellow supermodel Cara Delevingne and Nat Wolff.

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Given that Kimberly is rarely in the spotlight, not much is known about the beautiful blonde. However, she did appear in a Teen Vogue spread with Karlie -- in which we found out she's actually a twin! -- which spoiler alert, is a looker as well. And in a move reminiscent of the Kardashian clan, their parents have an obvious affinity for the letter K, given that their older sister's name is Kristine.

Aside from spending quality time with her sisters, Karlie's been keeping busy these days, launching her own YouTube channel on Tuesday. Appropriately titled "Klossy," the former Victoria's Secret Angel is letting her fans in on more than just her modeling career, including her passion for baking, college life at New York University where she just got accepted, and of course, her adventures with her famous friends.

"I've spent the majority of my life in front of the camera, but not my camera," she explains. "And this is where this is different. These are the things you didn’t get to see before."

PHOTO: Karlie Kloss and Taylor Swift Are 'Vogue' Cover Girl Besties

Check out the video below to see Karlie adorably fifth-wheeling the coupled-up Taylor Swift, Calvin Harris, Gigi Hadid, and Joe Jonas in London last month.

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