The 18-year-old Keeping Up With The Kardashians star was practically unrecognisable as she joined fashion's finest at the Marc Jacobs show on Thursday night (13 February).
Kendall's appearance caused a stir on Twitter with some questioning whether it was inappropriate to be wearing such a revealing outfit on the catwalk, while others applauded her transition from reality star to high fashion model.
As you'd expect, any criticism of Kendall didn't go down well with her protective big sister Khloe Kardashian, who wasn't afraid to let haters know how she felt.
Posting a collage of pictures of Kendall on the catwalk to Instagram, Khloe said: "My baby sister killed it today walking in the Marc Jacobs fashion show!!! Kenny you are so dope to me!!! Congrats my baby!!! #NYFW #MarcJacobs #ProudSis."
She then added to critics: "She's too dope for you 2 understand! Yall would trade places with her in a second! The hate is real! Lol bye haters! #ModelLife #Simple.
"Basic bitches NOT wanted."
Khloe wasn't finished there, however. After admitting that she couldn't pass up the opportunity for a "good rant", she responded to an individual tweeter who had expressed concern about Kendall's sheer top.
"It's a fashion show. She doesn't choose! #Clueless," wrote Khloe, after someone asked why Kendall had chosen to dress like that.
Kendall, meanwhile, hasn't said anything herself about her catwalk appearance. Instead, she simply retweeted Khloe's comment about "basic bitches NOT wanted".
The rest of the Kardashian clan have also been praising Kendall for her latest modelling venture, including her mum Kris Jenner who tweeted: "Amazing... I am so so proud of you @kendalljenner #marcjacobs."
Big sister Kim Kardashian added: "Proudest sister ever!!!! @kendalljenner I love watching you live your dream! #MarcJacobs #NYFW."