Kendall Jenner has just turned 18 and that makes the reality TV star of legal age. For her birthday, Jenner got offers from six porn companies.

Bangyoulater.com bid the highest offer with a whopping $1.8 million and she even gets to pick her own partner. Digital Playground offered a lesbian movie with Jesse Jane while Babes and Brazzers also gave their own offers.

Kim Kardashian's little sister has expressed her desire to be a famous model and getting into porn could definitely jeopardize her reputation. While Kardashian admitted that her sex tape with ex-boyfriend Ray-J was the first key to her fame, Jenner feels he does not need such exposure at this point. Aside from her TV show, "Keeping Up with the Kardashians," Jenner has already been working as a bikini model since she was 14 and she's piqued a lot of attention on her own by just posting photos of herself to her Instagram account, often in Spandex and bikinis.

Jenners' 18th birthday party didn't stop at Six Flags Magic Mountain as festivities continued with dinner with family and friends. She posted photos on Instagram and everyone was wearing festive masks. The model also posted a picture of a Shirley Temple topped with dry ice.

Earlier, she posted a photo of her bedroom decorated with "Birthday Princess" and "Happy Birthday" by her friends. Her birthday present is a Great Dane puppy that they named Blu.

Kardashian also posted a collage on Instagram, writing a birthday tribute to her younger sister: "Happy 18th birthday to the sweetest girl I know @kendalljenner I hope your adult years are filled with happiness and so much [love]."

Khloe Kardashian Odom also rocked a mask with the birthday girl in another picture from her sister's birthday celebration, posted another collage for Jenner on Instagram too and wrote a very sweet note: "Happy birthday Kendall!!!!! 18 years ago my life was changed forever because of you! The joy and peace you bring to so many lives are just a few of the rare gifts your spirit possess. I couldn't be prouder of the woman you are becoming. Happy birthday to my best friend, my roommate, my puppy sister, my heart. Sisters by blood, best friends by choice."