Kelly Yu, born 7 November 1989, is a Chinese Canadian singer and actress. Yu’s first movie was Under the Rain in 2012, directed by Liu Chen. Her first lead role was in 2014 in the television series One and a Half Summer pairing up with Nichkhun. In 2017, Yu starred in the romantic film The Ex-File 3: The Return of the Exes. She sang the theme song of the film.