Kylie Jenner -- So Many Porn Offers ...

Kylie Jenner is getting flooded with 7-figure offers ... to do porn.

TMZ has learned Vivid Entertainment has already fired off a letter to the freshly-minted adult, offering her a $10 million deal for a video featuring her and Tyga. Vivid honcho Steve Hirsch writes, "Kim's sex tape helped launch her career and would be nothing but positive for you."

Vivid has some stiff competition. BangYouLater sent its own written overture, offering $1.8 million up front, saying, "This event will make you even more famous than either Kim K or Paris Hilton."

BangYouLater is banking on a good performance by Tyga, writing, "Your scene must be at least 22 minutes in length."

Digital Playground is making a different pitch, claiming it produces the biggest porn movies in the biz, and asking Kylie to become its front woman. The company writes, "Now that you are of legal age, we would like to offer you the opportunity to be Digital Playground's Brand Ambassador!"

They also would like her to do porn: "We know you'll be great at this and with your banging body to match, maybe you'll be interested in becoming an adult star yourself! Join DigitalPlayground.com and be welcomed into a new, hornier family."

So many offers to juggle.