Kahi, a former member of K-pop girl group Afterschool, shared photos of herself via Instagram on Monday. Best known for her killer abs, the singer sports a gray wetsuit jacket in the photos, showing off her toned figure.Kahi is set to feature in an upcoming reality show “The Surfers” produced by a local cable network. All episodes of the show will be shot overseas, with the cast including singer Park Joon-hyung and actor Hyun-woo.The singer is also scheduled to feature in a musical "Cindrella" in September.By Ko Ji-seon ()