A Wisconsin judge has recognized the Iowa marriage of a lesbian couple for the purpose of adoption.

On Wednesday, Kat Riley adopted the 2-year-old biological daughter of her wife, Teresa Riley, who adopted her wife's 4-year-old biological son, according to the Wisconsin State Journal.

The Rileys, together six years, exchanged vows last year in Iowa and are registered as domestic partners in Wisconsin.

Dane County Circuit Judge Shelley Gaylord said that she recognized the couple's out-of-state marriage in part because Wisconsin's constitutional amendment which defines marriage as a heterosexual union has been found unconstitutional.

At least one other gay couple's marriage has been recognized, the paper reported.

On August 13, Dane County Judge Julie Genovese allowed Heather Schaller to adopt her wife's 5-year-old daughter.

Dane County is the state's second most populous county.