New York: Actress Keri Russell is reportedly expecting her first with actor Mathew Rhys.

The duo have been romantically linked after co-starring on FX's series "The Americans".

An insider told usweekly.com that Russell is "more than four months along" and that "it's so exciting" for both Russell and Rhys.

After news of her pregnancy broke, the 39-year-old actress stepped out here on Wednesday.

She was seen wearing an oversized tan coat that concealed her supposed blooming baby bump.

She is already mother to eight-year-old son River and three-year-old daughter Willa.

In December 2013, her publicist had confirmed that she had split from her husband Shane Deary.