Following in the footsteps of our friend John Legend (and his wife Chrissy Teigen), Kendall Jenner's nearly bare butt is now on Instagram—but for a slightly more obvious reason. The model just revealed her newest ad for Calvin Klein, shot by Mikael Jansson, which shows her topless and wearing a pair of super fancy Calvin Klein undies...not the classic version we've seen peeking out from her waistband in the past, but a sexier, semi sheer thong.

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Jenner has appeared in ads for the brand before, starring in Calvin Klein's #mycalvins denim series, but this is her first undies campaign, which officially inducts her into a group that includes Marky Mark, Kate Moss, Eva Mendes, Justin Bieber, Lara Stone and Christy Turlington, who've all famously posed in their skivvies for the brand.

The ads, which also feature Joan Smalls, Isabeli Fontana and Edita Vilkeviciute, will start to roll out later this month, and feature the tagline "the original sexy." "Calvin Klein originated sexy, and we're going to reclaim, reimagine and reimage it," Melisa Goldie, chief marketing officer of Calvin Klein Inc, said in a press release. "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."

"It was super fun. Every girl loves posing in her underwear. It's always fun to do that..."I'm close with Joan, and me and all the girls are friends," Jenner told WWD of shooting the campaign. "The shoot was amazing. Mikael Jansson shot it, and he and I have a good chemistry. Having girls around who are all my friends, the energy was really great."

See the full campaign here.

Sally Holmes Digital Director Sally is the Digital Director of MarieClaire.com where she oversees coverage of all the things the Marie Claire reader wants to know about, including politics, beauty, fashion, celebs, and Prince Harry's facial hair.

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