K Pop Star 4 has finally come to an end with Katie Kim crowned as the winner of the contest. She will be joining YG Entertainment and fans are now wondering when she will debut and how. Some speculate that she might form a duo with Lee Hi, the runner-up of K Pop Star 1. Katie Kim sang ‘Mama Do’ with Lee Hi and their voices just fused together perfectly, two of them have a strong vocals and would definitely work well tighter. Fans can hopefully see her on stage again soon, or maybe even with Lee Hi by her side 😉 !