Kendall Jenner — Porn Offers ROLLING IN

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The sun was barely rising on Kendall Jenner“s 18th birthday … when the top porn companies started offering her lucrative deals … including one for over a million bucks!

Kendall has been showing off her body for years … and big sister Kim Kardashian became a household name after her sex-tape with Ray J was released.

And now that Kendall”s legal, at least SIX COMPANIES are hoping they can convince her to get it on in front of the camera.

One of the companies — Bangyoulater.com — is saying it wants to pay K.J. and a partner of her choosing $1.8 MILLION to bump uglies.

Other interested parties include Brazzers, Babes and Digital Playground … the latter offering the option of a girl-girl encounter with porn star Jesse Jane.

No word on whether Kendall plans to take any seriously.

Considering Kim barely acknowledges her porn past … were guessing, no.