<Li> Dennis Quaid as Arthur Millard, Bart's father </Li> <Li> Cloris Leachman as Meemaw, Bart's grandmother </Li> <Li> Madeline Carroll as Shannon, Bart's girlfriend <Ul> <Li> Taegen Burns as Young Shannon </Li> </Ul> </Li> <Ul> <Li> Taegen Burns as Young Shannon </Li> </Ul>

Who plays shannon in i can only imagine