"Ali and Hayes are thrilled to be expecting their first child," her rep tells PEOPLE exclusively. The baby is due this winter.
Having a family has long been in the cards for the actress, 34, who wed MacArthur in Kennebunkport, Maine last August.
"I told my boyfriend after three weeks that I wanted to marry him and that we could do it tomorrow," Larter told Cosmopolitan in 2007. "I look forward to that time when I'm home with babies."
• Reporting by JENNIFER GARCIA
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