Kendall Jenner has been modeling barely-there bikinis since she was 14, but a new racy photo uploaded to Instagram might be the most of the reality star we've ever seen.

Jenner, who is just weeks shy of her 18th birthday, posted a black-and-white topless photo of herself with a mermaid tail to her Instagram account on Thursday night.

Though Jenner didn't write anything along with the photo, it's likely part of the same series that had her nude under a bunch of branches, by photographer Russell James as part of his "Nomad Two Worlds" project.

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  • LAS VEGAS, NV - MAY 18: Kendall Jenner arrives at the 2014 Billboard Music Awards at the MGM Grand Garden Arena on May 18, 2014 in Las Vegas, Nevada. (Photo by Gregg DeGuire/WireImage)

  • U.S television personality Kendall Jenner attends the Topshop Unique collection during London Fashion Week Autumn/Winter 2014, at the Tate Modern in central London, Sunday, Feb. 16, 2014. (Photo by Jonathan Short/Invision/AP)

  • Kendall Jenner walks the runway during the showing of the Marc Jacobs Fall 2014 collection at Fashion Week in New York, Thursday, Feb. 13, 2014. (AP Photo/Kathy Willens)

  • Kendall Jenner arrives at the American Music Awards at the Nokia Theatre L.A. Live on Sunday, Nov. 24, 2013, in Los Angeles. (Photo by Jordan Strauss/Invision/AP)

  • Kendall Jenner attends The Metropolitan Museum of Art's Costume Institute benefit gala celebrating "Charles James: Beyond Fashion" on Monday, May 5, 2014, in New York. (Photo by Evan Agostini/Invision/AP)

  • LAS VEGAS, NV - MAY 18: Kendall Jenner arrives at the 2014 Billboard Music Awards at the MGM Grand Garden Arena on May 18, 2014 in Las Vegas, Nevada. (Photo by Gregg DeGuire/WireImage)

  • PARIS, FRANCE - MAY 22: Kendall Jenner seen leaving the Four Seasons George V Hotel on May 22, 2014 in Paris, France. (Photo by Neil P. Mockford/GC Images)