The lead of CBS show "How I Met Your Dad" has been cast.

Greta Gerwig is set to play the female version of Ted Mosby on the "How I Met Your Mother" spinoff.

The "Frances Ha" actress will be expected to write and produce the show as well.

According to The Independent, there is speculation that the since the indie actress will also be writing, the new show may become something like HBO's Girls.

Word from the New York Daily News is that Gerwig will be playing the role of Sally, a New Yorker in her late twenties searching for "the one."

Unlike "How I Met Your Mother," Sally will be married in the pilot episode and will realize that she can no longer stay with her husband.

She will embark on the journey of the single life throughout the season.

The "Lola Versus" actress' character is described as "a female Peter Pan who has never grown up and has no idea of where she's going in life."

"How I Met Your Dad" has been written by "How I Met Your Mother" writers Carter Bays and Craig Thomas, along with "Up All Night's" Emily Spivey.

The Hollywood Reporter has stated that although the pilot will be filmed in Los Angeles, if the series is picked up by the network, it will be taped in New York City.

As for "How I Met Your Mother," after nine seasons the sitcom will be coming to an end. The series finale with Josh Radnor, Cobie Smulders, Neil Patrick Harris, Alyson Hannigan and Jason Segel is set to air on CBS on March 31.