Amanda Seyfried and Dominic Cooper reunite as Sophie and Sky in the new trailer for Mamma Mia 2: Here We Go Again ... we know who the father is." "You're pregnant?" Sky asks.

In Mamma Mia 2, though, we learn that Donna’s mother ... we know Donna and her mother fell out big time over that unplanned pregnancy (“she told me not to bother coming back,” notes Meryl ...