17-year-old Kylie Jenner may not go to school, but you can't say she doesn't hustle!

Last week X17 photographers snapped these exclusive photos of the reality starlet working it at a photo shoot in the Hollywood Hills, and now Kylie has posted a sneak peek online. We would say it's weird to call an underage celeb "sexy," but keep in mind Kylie is dating a 25-year-old and she just bought her own 4,900-square-foot party palace. On top of that, these pics are absolutely intended to be sexy, and just the other day it was reported that Kylie plans on posing for Playboy as soon as she's legal.

We're not sure what magazine the sizzling images are for, but Neave Bozorgi shot them and Kylie thanked her hair and makeup team for getting her all glammed up in the caption. More photos (and presumably more info) will be released today, so we can't wait to see the rest of it! She's no Kendall, but she's still pretty smokin' ... and apparently her body looks like this naturally! Kylie recently chatted with Star Magazine about her workout routine ... or lack thereof!

"I haven’t worked out for two years!" she tells the mag. "It’s really bad. I’m going to start this month for health reasons. I feel like all the food I eat is catching up with me as I get older." We never would have guessed from looking at her, but it makes sense now, because we always see Khloe and Kendall working out, but Kylie is rarely with them...