Keri Russell got into character on the Mamaroneck, NY, set of The Americans yesterday. She was joined by costar Matthew Rhys, who previously starred in Brothers & Sisters, for the day of filming. Keri's been working on the FX project all month and has been donning various '80s-style outfits, including high-waisted Guess jeans, for her role. Keri already has an exciting year behind her as she heads into the Summer. She and husband Shane Deary adjusted to life as a family of four after welcoming daughter Willa Lou in December, and Keri marked her 36th birthday. It was Shane being celebrated this weekend, though, since he was one of many new Hollywood dads to be recognized on Father's Day.