MAMMA MIA! HER WE GO AGAIN Trailer PremiereHere is the first MAMMA MIA! HER WE GO AGAIN trailer!The film, written and directed by Ol Parker (Imagine Me & You, Now Is Good), stars Lily James, Amanda Seyfried, Meryl Streep, Christine Baranski, Colin Firth, Pierce Brosnan, Jeremy Irvine, Dominic Cooper, Stellan Skarsgård, Andy Garcia, and Cher.MAMMA MIA! HER WE GO AGAIN will be released in theaters on July 20, 2018.Mamma Mia Here We Go Again is going through Donna’s (played by Meryl Streep and Lily James) young life, experiencing the fun she had with the three possible Dad’s of Sophie (played by Amanda Seyfriend). Sophie is pregnant, and like Donna, she will be young when she has her baby. This is where he realises she needs to take risks like her mother did.