Click here to hear Amanda Seyfried's dream plans for a third Mamma Mia film. Sabrina Carpenter and Sydney Sweeney are two of entertainment's busiest women, and Amanda Seyfried wants to add one more gig to their plates - a role in Mamma Mia 3, specifically.

Sabrina Carpenter and Sydney Sweeney are two of entertainment’s busiest women, and Amanda Seyfried wants to add one more gig to their plates — a role in Mamma Mia 3, specifically.