Courtesy of Celebuzz

Here she poses again.

Kardashian half-sister Kendall Jenner, a tender 15, is fronting an edgy new ad campaign for designer Marc Clark's Marcc Haute T-Shirts line.

Jenner made waves this summer when she posed on a California beach in sexy bikini for a shoot with photographer Nick Saglimbini for her Wilhelmina modeling portfolio. Her reality-star parents, Kris and Bruce Jenner, later defended those pics as appropriate.

This week, Kendall's half-sisters, Khloé and Kim Kardashian, posted pictures from Jenner's new campaign that feature her posing in sequins, denim and print short-shorts, violet smoky eyes and piles of bangles.

Courtesy of Celebuzz

"I know I say it all the time, but I swear, she gets more and more professional with every shoot she does," Khloé Kardashian writes. "It just blows my mind how she and Kylie have transformed from my baby sisters into these beautiful young women."

Kendall, a cheerleader at her California high school, began her modeling career fronting a campaign for Forever 21 in 2009.

Kim Kardashian wrote she was "obsessed" with the latest pics of her little sister. "I swear she just gets more stunning with each photo shoot."

The ubiquitous Kardashian sisters were not the only ones stunned. Designer Clark told E! online that high school student Jenner has "that model presence" and was a "blast" to work with on set. "She stands 5-foot-10. She's very tall. When you see her, the first image you think of is not even a celebrity or a Kardashian or a Jenner, I think model."

Speaking of obsessed, read all about Khloé's recent stunning transformation into a redhead.

And read about allegations that the sisters demanded a $12,000 hair and makeup allowance for their ill-fated credit card deal.

Also, check out this roundup of tweens turning into style icons.