"That wrap party specifically, I was drunk. Everybody was," the actress tells PEOPLE What happens at a Mamma Mia! wrap party doesn’t always stay at the wrap party. The 2007 Mamma Mia! wrap party became legendary,

At the ninth annual Love Rocks NYC benefit concert, the singer took time to pose with her onscreen granddaughter.

Amanda Seyfried Teases ‘Mamma Mia 3’ #amandaseyfried #mammamia #shorts More from Entertainment Tonight: Exclusives from #EntertainmentTonight : ------------------------------------------------------ LiveTube | Latest Breaking News and Live Video Pioneering LIve

Mamma mia, here I go again, my, my, how can I resist you? Mamma mia, does it show again? My, my, just how much I've missed you?

"Show me the money!" the 'Long Bright River' actress joked, before explaining the scheduling logistics behind the movie musical's delay