Three words: Thigh. High. Slits.

Kylie Jenner did a lot of things this year.

She Snapchatted, she confused fans about her relationship status, she broke hearts 'round the world with a lip kit that sold out in mere minutes...

But most importantly, her style, much like her hair, was ever-changing.

At times taking cues from big sister Kim and almost always showing some skin, the littlest Jenner / Kardashian hit her highest fashion stride unsurprisingly during New York Fashion Week in September.

Behold, her 10 best looks of the year, based on scientific evidence our opinion.

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At the NBCUniversal Cable Entertainment Upfront on May 14.
GVK/Bauer-Griffin via Getty Images
At LAX on August 15.
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At the opening of Sugar Factory in Miami on June 19.
Imeh Akpanudosen via Getty Images
At the premiere of "The Gallows" in Los Angeles July 7.
James Devaney via Getty Images
At Alexander Wang's New York Fashion Week show on Sept.12.
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At Prabal Gurung's New York Fashion Week show on Sept. 13.
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At the Oepning Ceremony New York Fashion Week show on Sept. 13.
Raymond Hall via Getty Images
On the way to Vera Wang's New York Fashion Week show on Sept. 15.
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Out in New York on Oct. 20.
Mike Windle via Getty Images
At the GQ 20th Anniversary Men of the Year Party in Los Angeles on Dec. 3.

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Teen Choice Awards 2009 - Red Carpet

Kylie Jenner Through the Years

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