HGTV star Erin Napier shared a sweet birthday moment with her rarely-seen older brother Clark on Instagram. In response to the video, fans swooned over Clark's undeniable charm, sparking calls for him to join the Home Town cast as a regular. The Home Town star has been candid about everything from motherhood to her adorable relationship with husband Ben. But just when we thought we knew everything about the design pro, she shared an adorable video of her and her older brother, Clark, on Instagram. While Erin doesn't share much about her big brother, Clark is reportedly a doctor of physical therapy in Laurel, Mississippi.