Rachael Harris

Rachael Harris is joining the cast of My Boys, TVGuide.com has learned.

Harris (Notes from the Underbelly) will play Mike's (Jamie Kaler) neighbor and love interest, Marcia.

Exclusive: My Boys picked up for fourth season

The 42-year-old actress will first appear in the latter half of Season 4 and will play an integral part in the season finale. Harris most recently guest-starred on ABC's Cougar Town in November, and appeared in the summer smash The Hangover. She will next be seen in the film Diary of a Wimpy Kid, which hits theaters Friday.

My Boys's new season premieres on Sunday, July 25 at 10/9c on TBS.