Congratulations, Johnny Knoxville! You're Getting Married!

The Jackass star is tying the knot to his longtime girlfriend, Naomi Nelson, today!

Johnny Knoxville of MTV’s Jackass fame is walking down the aisle Sept. 24 and marrying his girlfriend and mother of his second child, Naomi Nelson.

“They actually picked out Naomi’s engagement ring two days ago and they’re getting married today!” an insider told Life & Style.

Johnny and Naomi have been dating for two years, but had their first child — Rocko Akira Clapp — together last Dec. Congrats to the family!