Question: what actors are in the new mamma mia movie

title: Mamma Mia! Here We Go Again
text: Back in the present , the guests have arrived at the party and Sophie is reunited with her other two fathers and Sky . Sophie reveals to Sky she is pregnant and has never felt closer to her mother , having now understood what her mother went through . Bill and Rosie reunite over their grief for Donna . Sophie 's estranged grandmother and Donna 's mother , Ruby , arrives despite Sophie deciding not to invite her . She reveals that Sky tracked her down in New York and she wants to build a real relationship with Sophie . Sophie then performs a song with Tanya and Rosie in honor of her mother , with her grandmother tearfully telling her afterward how proud she is of her . It is then revealed that the manager of the hotel , Fernando , is Ruby 's ex-lover from 1959 in Mexico , and the two are joyously reunited .