"Baby Sister" is a single by American singer La Toya Jackson, the final taken from her fourth album Imagination. The single was released in a 7" format in Japan. Allmusic described the song as "too cute and overdone to be taken seriously" however The Baltimore Afro-American complimented the track as "new waveish" "ear candy". The single is most notable for being a winner of the "Outstanding Song Award" at the sixteenth annual World Popular Song Festival on October 27, 1985 in Tokyo, Japan, where Jackson performed the song live with younger sister Janet on backup vocals. Jackson brought home a silver medallion and $1000 in prize money. The single includes an instrumental mix of "Baby Sister".