Kailyn Lowry is finally showing Teen Mom 2 fans what her growing baby bump looks like. She confirmed on Feb. 4 that she is pregnant with her fourth child, later revealing that she’s having a fourth son. On Feb. 20, Kail shared a boomarang video to her Instagram stories, where she lifted up her sweatshirt to show off her bare bump. The 27-year-old wrote “baby boy is showing off today,” over the video.