Adult Child (sometimes typeset as Adult/Child) is an unreleased studio album by American rock band the Beach Boys, intended to follow the group's 1977 Love You. Like Love You, it is virtually a Brian Wilson solo project with other group members serving mainly as additional vocalists. After it was rejected by Reprise Records, the band released the 1978 M.I.U. Album in its place with an almost entirely revamped song list.