The new film, featuring more of ABBA’s greatest hits, unites all the principle stars from the first movie, including Meryl Streep, Amanda Seyfried, Pierce Brosnan, Stellan Skarsgard, Colin Firth, Christine Baranski, Julie Walters and Dominic Cooper.
With Cher and Lily James among those joining the cast for the follow-up, fans of the record-breaking 2008 original will be visiting cinemas in their droves to catch up with all the loveable characters.
So how have they changed over the last decade?
Take a look through the gallery below to find out.
Streep recently said of her return: “I really never thought that there would be a sequel. When this script came, it took my breath away.”
She added: “Walking onto the set and seeing Colin and Stellan and Pierce and Christine Baranski and Julie Walters and Dominic and Amanda…
“The music starts up and you put on the spandex and honey, it all comes together.”
Of the finished product, she declared: “It just has an indescribably joy in it, and pure fun.”
James said: “When I found out I would be part of the sequel, i was terrified and very excited.
“Donna is a character so beloved and Meryl Streep is the best actress of all time.”
Find out how to watch the first Mamma Mia! movie here.
Mamma Mia: Here We Go Again is out on July 20.