Meryl Streep comeback in 'Mamma Mia 3' on the cards? Studio head shares promising update

Studio boss shares Meryl Streep could come back on 'Mamma Mia 3' as film is greenlightedIn Mamma Mia, Meryl Streep portrayed Donna Sheridan, a single mother and independent hotel manager. Fans raved about her performance in the musical hit franchise.But in the sequel, Mamma Mia! Here We Go Again:...