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TikTok has been driving fashion trends since its debut in 2016, whether you participated in the hype surrounding a viral drugstore mascara or you succumbed to the draw of the infamous workout leggings. One of the big areas that TikTok generates a lot of excitement for is athletic gear, and right now a highly rated jacket from lululemon is making the rounds thanks to its ability, according to wearers, to simulate the look of a BBL (a Brazilian butt lift). Yes, you read that correctly. 
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The Define Jacket, which currently lives on TikTok under the hashtag #lulubbljacket, is making waves for its ability to sculpt and shape the wearer’s lower and upper body, which many TikTokers claim replicates the effects of the controversial, celeb-driven procedure made famous by the Kardashians and Cardi B. Videos displaying the jacket’s sculpting capabilities have racked up over 4.3 million views.
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We’ve tried out this jacket before in the context of lululemon’s plus-size offerings, and our reviewer noted that the jacket fit the best of all the items she tested. She specifically enjoyed the way that the jacket hugged “all the right places” and kept her warm while she was on the move.
The Define Jacket is available in sizes 0-20 and comes in the sweat-resistant, secure Luon fabric, which we ranked as the most supportive lululemon fabric. The jacket is available in nine different colors, including sleek neutrals like Heathered Black and brighter options like Raspberry Cream. Reviewers on lululemon’s website have been heaping on five-star reviews as recently as one day ago; many people attested to the jacket’s flattering fit and lightweight feel. 
If you prefer, you can also find variations on the Define jacket, including a version with a hood and a version made with the lululemon Luxtreme fabric
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Prices were accurate at the time this article was published but may change over time.

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