After the final scene of the movie Meryl Streep, Christine Baranski and Julie Walters appear on a sound stage in matching 1970s glam-rock costumes and sing "Dancing Queen". When they finish Meryl 'asks' the audience if they want an encore. The three ladies are then joined by Pierce Brosnan, Colin Firth and Stellan Skarsgard who are similarly attired. Along with Amanda Seyfried and Dominic Cooper, they provide a rendition of "Waterloo" as the main credits roll.