Kailyn Lowry, who vowed to lose 50 pounds after welcoming her fourth son this summer, is proving she's on track. The "Teen Mom 2" star has appeared in a new photo to promote her popular "Coffee & Convos" podcast, with the 28-year-old looking stunning in a skimpy black crop top showing off her post-baby body. Kailyn, who welcomed son Creed at the end of July, has been both showing off her postpartum curves and her mindset – and she's also been branching out with a newer podcast. Check it all out below.