Kendall Jenner, half-sister of reality-tv star Kim Kardashian, scored her first US Vogue cover and was pronounced the “breakout model of her generation” by the fashion Bible, a rare honor that drew both cheers and jeers on social media.

Vogue posted the cover this morning just after 9 a.m. By the end of the day it had more than 11,000 likes.

Kim gave it an extra kick by posting the cover on Twitter for her 47.3 million followers, more than four times the magazine’s number.

“True fan girl moment seeing my sis achieve her goals to the highest goal,” Kim tweeted.

“Generation K! Shine baby sis…cover of September Vogue!! I am so proud of you every day for living your dreams!” chimed in Kourtney Kardashian.

Not everyone was throwing confetti, however. Some were throwing shade over the accolade, which most models wait years–if at all–to achieve.

“honestly. how does the vogue september issue even go from this to this? i really just wanna know how,” wrote one disgruntled follower comparing Kendall’s cover with Beyonce’s Sept. 2015 cover.

“if miranda priestly was the editor and chief of vogue this would never have happened,” wrote another Twitter boo bird.

She was referring to the fictional editor in the 2006 film “The Devil Wears Prada,” played by Meryl Streep. The character was based on real-life Vogue editor Anna Wintour.

“i am honestly so pissed off an so done with vogue us,” the commenter added.

“THIS is the vogue september issue…?” sneered another on the social media site.

“FUCK,” wrote still another.

The magazine touted Jenner’s modeling resume, but actually it’s pretty thin.

Jenner started modeling at 15, mostly as a novelty for swimsuit companies.

She made her runway debut for Marc Jacobs two years ago at New York Fashion Week. She touched off a storm when she wore a sheer top that exposed her breasts. It was her only show.

She also debuted at London Fashion Week, but only after Love magazine Editor-in-Chief Katie Grand helped her get the gig.

By the time she returned to NYFW last year, however, she was in demand.

She walked for Donna Karan, Diane Von Furstenberg, Marc By Marc Jacobs, Oscar De La Renta, JINsoon at Vera Wang, the Vera Wang Collection and Alexander Wang.

Kendall scored a major breakthrough last September, landing the covers of Vogue magazine’s Japanese and French editions. She posed in sheer lingerie that left nothing to the imagination up top.

She’d previously appeared in Vogue Australia and Vogue US spreads both in the magazine and online.

Because of her celebrity connections, Kendall has been a polarizing figure among other models at times.

Model Arisce Wanzer slammed Jenner in Nov 2014. In an open letter, she charged that Kendall’s rapid success as a model “cheapens [the] entire experience” for other models.

Models Binx Walton and Lexi Boling also diss Kendall on Instagram. They raised similar objections about too much attention and too little experience as a model.

Kendall’s rise may have been meteoric, but there’s no denying that she’s got the looks and cred to walk any runway in the world.