The stars attended the Mamma Mia! Here We Go Again premiere in London on Monday, and it looked like a huge party. Aside from transforming the red carpet into Kalokairi, the cast looked like one big, happy family as they posed for the cameras. While Amanda Seyfried and Lily James (who plays younger Donna) laughed in front of the huge Mamma Mia sign, Meryl Streep and her onscreen mom Cher gave each other a kiss as they hugged it out. There were also a few celebrity families on-hand for the event as Thandie Newton attended with her look-alike daughters, and Tom Hanks and Rita Wilson showed off their three-decades-long romance. See all the best moments from the premiere ahead.