Jackass star Johnny Knoxville is going to be a father for the second time, his rep confirms to Usmagazine.com. "Yes, they are expecting and very excited." Awwh I am so happy!

Naomi Nelson, Johnny's girlfriend of nearly one year, is three months pregnant.

Knoxville is already dad to 13-year-old daughter, Madison, with ex-wife Melanie Clapp. The father-daughter duo are pictured above in May of this year. Johnny and Melanie were married for 12 years before separating in July 2006. One year later, Knoxville filed for divorce, citing irreconcilable differences.