Meryl Streep’s Daughter Mamie Gummer Files for Divorce

“The Good Wife” star Mamie Gummer is now an estranged wife … because she just pulled the plug on her marriage.

Meryl Streep‘s oldest daughter beelined it to court Thursday and filed to divorce her husband Mehar Sethi after 6 years of marriage.

In the divorce docs, obtained by TMZ, Mamie lists the date of separation as May 6, 2023 … and she’s going with the boilerplate irreconcilable differences as the reason for the split.

Mamie is seeking joint legal and physical custody of their 5-year-old son Peter and 3-year-old daughter Mary.

She’s also seeking spousal support and checked the box to terminate the court’s ability to award support to her estranged husband.

Mamie and Mehar, a writer, tied the knot in February 2019 … and, two weeks later she gave birth to their first child.

This is Mamie’s second divorce … her first marriage was to actor Benjamin Walker.

Meryl and Don Gummer announced their separation in September 2023 … and in March 2020, Mamie’s sister Grace Gummer filed for divorce from her husband.