Kendall Jenner is looking all grown up in the new Calvin Klein underwear campaign, giving her sister Kim a run for her money as the 19-year-old displayed her bottom in a semi see-through thong.

The model posed in nothing but a pair of skimpy thongs for the black and white photoshoot for Calvin Klein's Fall 2015 underwear collection. Kendall Jenner's topless picture is only one of the several pictures of the campaign, which also features supermodel Isabeli Fontana, Joan Smalls and Edita Vilkeviciute.

Calvin Klein's campaign promotes "the original sexy." Melisa Goldie, who is the Chief Marketing Officer of the clothing line, explains that the brand wants to remind the world where 'sexy' started.

"Calvin Klein originated sexy and we're going to reclaim, re-imagine and re-image it," she said in a statement. "We're bringing together a powerful mix of women from all over the world to celebrate our heritage as a leader in the intimates category."

Kendall is going stronger with her modeling career and rapidly becoming a true fashion icon in her own right, but with her latest ad campaign for the popular brand, Kendall Jenner is channeling her inner Kardashian and showing off her assets in the racy shoot for Calvin Klein.

Kendall is not topless in all her pictures though as the model also wears a lacy brassiere in one photo. In a different picture, the 'Keeping Up with the Kardashians' star poses in matching bra and panty set, showing off her abs.

It seems like her own half-sister adores Kendall's abs. Khloe Kardashian has just posted an Instagram picture of herself licking the young Jenner's stomach. "I missed her so much and those abs were irresistible!!!! #SisterSister," Khloe wrote.

Kendall is close friends with fellow celebrity supermodel Gigi Hadid. The young Jenner and rumored boyfriend Lewis Hamilton recently went on a double date with Gigi and Joe Jonas.