Mamie Gummer Meryl Streep’s daughter engaged

Meryl Streep’s daughter Mamie Gummer is engaged, US Magazine reports! Mamie (real name Mary Willa Gummer) has been dating boyfriend Ben Walker for about a year-and-a-half. They met while performing together in Broadway’s Dangerous Liasons. Walker proposed the old fashioned way by getting down on one knee and presenting her with an over-sized ring in…