Article continues below advertisementKendall Jenner is serving major fit-girl energy this fall - and her abs are the star of the show.Article continues below advertisementThe 29-year-old supermodel shared a fresh set of Instagram snaps that showed her posing both inside what looks like her home gym and outside in the driveway.Article continues below advertisementSource: @kendalljenner/Instagram;Kendall Jenner posed in a slate-blue Alo Yoga workout set.