January Jones gave birth to her first child on Tuesday, a baby boy named Xander Dane Jones.

A rep for the Jones told PEOPLE that both mom and baby are “doing great.”

The 33-year-old actress, best known for her role as Betty Draper on AMC’s hit series “Mad Men,” has not revealed the identity of the baby’s father. She announced her pregnancy in April, a few months after her split from actor Jason Sudeikis.

“She’s really looking forward to this new chapter in her life as a single mom,” a source told PEOPLE after Jones confirmed the pregnancy rumors.