Article continues below advertisementKendall Jenner is giving summer a sizzling send-off.The 29-year-old supermodel lit up Instagram with a fresh photo dump, including a cheeky poolside snap in a tiny black thong bikini that showed off her famous curves.Article continues below advertisementThe faceless shot only highlighted her toned waist and peachy backside as she stood against the blue water."Sunday," Jenner simply captioned the post.Article continues below advertisementSource: @kendalljenner/InstagramKendall showed off her booty in a black thong bikini.