Letourneau, now 48, served more than seven years in prison for her affair with student Vili Fualaau. The two married shortly after Letourneau's release in 2004 and have two daughters together.
In December, Steve Letourneau, one of Mary's four children from her first marriage, became a father, NBC's Today Show reports.
Steve Letourneau is 26 years old - just a year younger than his stepfather.
Letourneau first met Fualaau, now a DJ in the Seattle area, when he was in the second grade. Their relationship became sexual when he was 12 and she was a 34-year-old teacher at a suburban elementary school.
Letourneau was pregnant with Fualaau's first child when she was arrested in 1997. She pleaded guilty to second-degree child rape and was sentenced to 7-and-a-half years in prison, with all but six months suspended.
Within weeks of her release, she was caught having sex with Fualaau in her car and ordered to serve the remainder of her sentence.
Source: cbsnews
