"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.

Thankfully, Seyfried did still have a chance to show off her stunning singing chops in a new upcoming original musical film directed by Mona Fastvold from a script she co-wrote with husband and partner on “The Brutalist,” Brady Corbet. Set in colonial times, “Ann Lee” follows the story of the Shakers founder and leader of the same name.

Amanda Seyfried recalled the wild 2007 Mamma Mia! warp party after photos of the cast were leaked.That was 18 years ago, I can't even do the math, she told to the People magazine.Reflecting on

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