9:49 PM PT -- Sources connected to the shoot tell us the images of Kendall were stolen from James and released without permission.
Kendall Jenner's completely in the buff, sprinting on the beach in a newly released portrait ... and the Internet is already having a field day.
Kendall's no stranger to nudity, but this photo -- along with several more reportedly from a series from photographer Russell James for his upcoming book "Angels" -- is Kendall like you've never seen her before ... and folks on social media seem to be in shock.
James' "Angels" collection was celebrated last week in NYC at a bash co-hosted by Cindy Crawford and Candice Swanepoel.
The book's expected to feature a whole lot more of completely naked Kendall -- including her climbing a tree, lounging in a pool and riding a horse bareback -- but when it comes to generating buzz ... the beach pic is the frontrunner.
See also
Kendall Jenner Could Be Hooking Up with Anwar Hadid
Kim Kardashian Strolls Malibu Beach in Bikini
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