Kendall Jenner posted one of her most racy photo on Instagram exposing her nipples, proving that she's all grown up.

The E! star, who just turned 18 a couple of weeks ago captioned her Instagram photo with, "sneak peak of today's shoot with the amazing @nomadrj ... can't wait for you guys to see the rest of the photos!"

 The controversial black and white image features the 18-year old Kendall looking into the camera with her wet hair donning on her face while revealing her breasts through the see-through black mesh top wearing no bra underneath it - clearly making it the raciest photo she has ever taken.

Prior to this photo, Jenner posed topless as a mermaid last month, causing some stir from the social media network, although the young reality star made sure that she covered her breasts with her arms, she was still 17 when the photo was taken.

Kendall Jenner obviously wants people to know that she's all grown up and people should accept that as she also posted a photo on her Twitter account from a scene on the shoot with her literal behind on the photo.

behind the scenes today.. literally lol @NomadRJ pic.twitter.com/uGeLdJOjeq

— Kendall Jenner (@KendallJenner) November 19, 2013

Although Kendall Jenner Instagram photos are really a looker, it received some hatred on the internet. Nevertheless, her big sister Khloe Kardashian-Odom was fast to come to her rescue on Twitter.

"Gorgeous @KendallJenner!!! High fashion! Model your booty off and show them how its done!!! Major Model Moment!," she tweeted before adding, "I love seeing all of these haters comments. Naomi, Kate, Cindy.... All fabulous models.... Models and photographers take beautiful (1)...Artistic images. And I don't hear you birds chirp then. Sit down and enjoy the view! #SorryNotSorry."

Kendall Jenner is known for posting racy and controversial pictures on both Instagram and Twitter. She has 6.4 million followers on Twitter and 7.3 million followers on Instagram.