April 28, 2011 at 8:35 PM ET
The actress may play a mom of three on the hit show "Mad Men," but she's about to become a real-life mother.
"January Jones is happy to announce that she is expecting her first child this fall," her rep told PEOPLE.
The 33-year-old didn't release any other details, but a source close to her told the magazine that "she's really looking forward to this new chapter in her life as a single mom."
Jones was previously linked to Jason Sudeikis, but reportedly split in January.