You may practically need a magnifying glass to see it, but it's still a tattoo!
Meanwhile, as Kendall displays a new look for her boobs, her 18-year-old sister Kylie is denying rumors she had hers done.
"I'm gonna share with you guys one of my tricks," Kylie says in a video, explaining how she got her much fuller look. "I don't really share this with a lot of people, but everyone thinks I've gotten a breast augmentation recently. I haven't. I just use the Bombshell by Victoria's Secret."
"It's life-changing," she adds. "I've gotten all my sisters on it, all my friends, and if you ever want the look of bigger breasts, that's what I do."