03/30/2013 02:20 pm ET

Mamie Gummer, Benjamin Walker Split After Nearly Two Years Of Marriage

Meryl Streep's daughter is calling it quits with her husband of almost two years.

Mamie Gummer and Benjamin Walker have split, her rep tells Us Weekly, adding, "It's very amicable."

The "Emily Owens, M.D." star, 29, met fellow actor Walker, 30, in 2008 while performing in the Broadway production of "Les Liaisons Dangereuses" together. They announced their engagement in Oct. 2009 and officially tied the knot at the Gummer's Connecticut estate in July 2011, in front of fellow stars like Claire Danes and Laura Linney.

A source close to Gummer, who is the daughter of Streep and her longtime husband, sculptor Don Gummer, says the break up is "very new."