<Ul> <Li> Lily James as Young Donna, founder of Donna and the Dynamos . </Li> </Ul> <Li> Lily James as Young Donna, founder of Donna and the Dynamos . </Li> <Li> Christine Baranski as Tanya Chesham - Leigh, one of Donna's best friends and former bandmates in Donna and the Dynamos; a rich three - time divorcee . <Ul> <Li> Jessica Keenan Wynn as Young Tanya </Li> </Ul> </Li> <Ul> <Li> Jessica Keenan Wynn as Young Tanya </Li> </Ul>

Mamma mia song in mamma mia here we go again